A term which is still used in Popular Astrology that refers to the idea that each day is ruled by one of the seven classical planets.
Translator: Cihan Ekmekçi Reviewer: Leonardo Silva Thank you David, thank you for being here, thank you everyone who tuned in, so let me get started, I have limited time, the clock is running. (Laughter) The solar system is old, we have little time here. (Laughter) So I'm a planetary dynamist.
That's a bite and a pretty esoteric profession. But as a planetary dynamist, I am particularly attuned to two mathematical things about planets: the shapes of their orbits and their period relationships. So I like numbers.
When astronomers began to notice some peculiar patterns about two years ago in the Kuiper Belt, that belt of small planets beyond Neptune - we call them minor planets or Kuiper Belt objects - I - tuned to their orbital shapes and their periods, and I stumbled upon a new idea that could help us discover a new planet in the distant solar system. The search for a distant planet in the solar system is a story of human imagination and curiosity and the heightening of intellect and technological sophistication. It's also about being human, about our curiosity about the universe, about knowing our place in the cosmos.
So I'm going to start with a brief history of this very human enterprise, simple concept of the cosmos. (Laughter) So we live on earth, the sun and moon rule heaven and our daily life, and the hereafter is up in heaven or down in hell. Very easily.
With more data from the long time cycles in the sky, humans developed a more sophisticated model of the universe. A more sophisticated conceptual model of the universe. There were the distant fixed stars, the seven wandering stars, all gods and demons who ruled over our lives and the cosmos. with more data and more math, a more accurate model was accepted.
That's the Ptolemaic model you see up there. This was a combination of circular orbits. Everything in the universe was perfect; Circles are perfect, spheres are perfect.
And this was a very successful model, it was really accurate in predicting the cycles in the sky, and it was accepted for over a thousand years. It predicted the seasons, everything we needed for human life, agriculture and so on. Then, at the beginning of the 17th century, Galileo angered the elders with a new technology.
He pointed a small telescope at the sky and discovered that not everything in the sky revolves around the earth. There are worlds turned around Jupiter. The sun wasn't perfect, it was spotty.
The moon carried mountains and valleys like the earth, and the evening star Venus ran phases directly on the moon. So the heliocentric cosmos in the center of the sun grew in acceptance. A mechanical model of the cosmos emerged, starting with Kepler's laws of planetary motion and leading to Newton's law of gravitation.
The cosmos was eventually ruled by natural laws. Shortly afterwards, using a larger, better telescope, Sir William Herschel, in England, discovered a new planet in the solar system, Uranus, a planet unknown to the ancients. And this discovery really opened the human imagination to the possibility of more planets and more objects in the cosmos, more than we could see with our eyes before.
A careful analysis of the slow motion of Uranus, now to seek the telltale fingerprints of the gravity of planets, of even more planets, prompted a French mathematician, Urbain Le Verrier, to pinpoint the exact position of the invisible 8 on September 23, 1846. In this one At night, a German astronomer pointed his telescope at the sky and actually found this planet at the location that was predicted that same night. And this was a triumph of 19th century mathematics applied to the cosmos. the most famous search for planet 9 - I'm here to talk about planet 9 - the most famous search for planet 9 was that of Percival Lowell.
This was his observatory. He was convinced that the motions of Uranus and Neptune were sufficiently bogus that there was a great planet beyond Neptune, and in 1906 he began a systematic search at his observatory in Flagstaff, Arizona. This is my adopted home.
And this was the first observatory located in the distance to take the best astronomical photography ever. Lowell died in 1916, but the search continued. The planet we were looking for was found in 1930 and named Pluto.
A call for Pluto! Pluto fighter, here? (Cheers) (Applause) Well, more than two decades of searching for this planet is really a story of persistence. Human life and generations of astronomers have persistently searched for objects in the sky. However, the size and mass of Pluto took even longer to colonize.
It wasn't until 1978 when its moon Charon was discovered and unfortunately it became very clear that Pluto is smaller than our own moon than Earth's moon and therefore just a distant cousin of this planet, which was Lowell Well, the hard work, Pluto's movements over many Following decades of following has revealed many surprises about this little planet, the shape of its orbit and its relationship with Neptune, the things that I tune myself into, the things my mind attunes. Pluto's orbit is very elliptical, okay? It overlaps the orbit of Neptune. But these two never collide.
These two planets are in a heavenly partnership known as orbital resonance. So Pluto makes two revolutions around the sun at the same time as Neptune makes three, and in this way the two are never in the same place when Pluto was at perihelion. So that never lets them collide.
They kind of dance around each other. The three-dimensional geometry calculations showed that this - Oh, look at this beautiful picture of Pluto. This is the symmetrical grand past Pluto makes when you are on a carousel revolving around the sun with Neptune's orbital time.
Notice the symmetry of Pluto's orbit. This is this resonant orbit and we will keep bumping into resonances. So fascinating is the three-dimensional geometry of Pluto's orbit too.
There is actually an additional resonance, more subtle. Pluto reaches perihelion when it is furthest from the orbital plane of Neptune. So Pluto's orbit is inclined.
It reaches perihelion when it is far from the plane of the solar system. And with the passage of time it only wobbles slightly around this geometry, known as periodic orbit of the third kind, belongs to a class of orbits identified by the 19th century French mathematician Henri Poincare. Such orbits have a period of resonance and a specific inclination to the planet.
The gravitational forces - so these are really fascinating orbits - the gravitational forces of the planets on each other have a special respect for these resonance patterns and we will come across them again with Planet 9. And as a graduate student I learned about these riddles from Pluto and I asked myself, ' 'How did Pluto get this peculiar planet?' 'And I suggested an answer.
I suggested this answer, which you see in this animation here is a giant planet wandering that the giant planets Jupiter, Saturn, Uranus and Neptune formed in a very tight circular ring around the sun and then later spread apart. I calculated this as Neptune slowly spiraled outwards, an originally circular coplanar, Pluto, was driven into this resonance and transformed into this elliptical, inclined orbit. Well, fortunately for me, for an astronomer, it is really fortunate that in the few years after I proposed this idea, the following discoveries have been made, discov series of the Kuiper belt, many small planets beyond Neptune, the in resonance with Neptune have supported this giant planet migration hypothesis.
So our planets were not formed where we see them today. Computer simulations suggest that Uranus and Neptune, and possibly other giant planets, were shaken up, scattered over millions of years, before they settled in the orbits we observe today. Well, more recently, evidence of a massive planet has been noticed in the distant solar system.
The orbits of the most distant Kuiper Belt objects are a kind of cluster, they are not oriented randomly as we might expect. So if a distant planet - the true planet 9, not little Pluto - whether a distant planet 9 is guarding these Kuiper belt objects, we would like to know how massive it is, where it is orbiting. Well, computer simulations tell us that the planet is up to 10 times the size of Earth's mass, somewhere between 300 and 900 times the distance from Earth.
But these simulations tell us nothing about its posi in the sky, where it is currently in its orbit, where we would look for it. Now when I looked closely at the data, I noticed another fascinating pattern; numbers tables here again, right? (Laughter) So what I noticed was that the ratios of the orbital times of the most distant objects are close to small integers. Well, this could be mere numerology, or it could be a real clue, a real clue, if a massive planet - and it could be a real and valuable clue, I'll show you - actually beware of those Kuiper Belt objects and orbital resonances - if a planet actually guarding those Kuiper Belt objects and resonances then I have an idea where the planet is, just like Pluto's resonance with Neptune.
If we know where Pluto is, we know where Neptune is not. It is nowhere near Pluto's perihelion. So I was looking for an orbit of Planet 9 that would be resonant with the distant Kuiper Belt, these Kuiper Belt objects.
There is only a small numbness of possibilities, of probable possibilities. The choice that most closely matches the orbital clustering we've seen is an orbit with a period of nearly 17,000 years, a very long period. So this planet moves very slowly in the sky orbit period leads to simple resonance geometries of the distant Kuiper belt objects relative to planet 9, like the shapes you see on the screen now.
These shapes of the resonance orbits show us the portions of orbit that this hypothetical planet cannot currently be in. Also, there are only two choices or two approximate choices for the inclination of this planet's orbit. One of them is that it is either near the planes of these distant Kuiper Belt objects, or it follows these periodic orbits of the third type of Poincaré that I mentioned earlier, so it has a certain inclination, and these two options turn out to be just 18 degrees inclined out to the plane of the earth's orbit; the other is at 48 degrees to the orbit of our planet.
We now want to refine our mathematical predictions and test them with telescopes to prove that this planet really exists. Or if the apparent patterns in the distant Kuiper Belt are perhaps a coincidence, a statistical coincidence of a small sample. We only have a dozen or so objects that give us these clues, so should we find Planet 9? It will be a triumph of both mathematics and advanced astronomical technology.
Once again, what will it mean to go to a great planet far, far away? Discover? Well, we are going to have a more complete inventory and a new self-image of the solar system. It could finally make horoscopes more accurate. (Laughter) (Applause) Well, for scientists, it will stimulate new research into the origins of comets.
This planet 9 grazes in this reservoir of frozen body, the remnants of our solar system, far out in the distant solar system. How does it affect the frequency of comets that come to us so we can see them in the sky? inner solar system. It will also stimulate late new research on the formation of the solar system.
How did the solar system manage to look like that clockwork Newton and Kepler believed in despite having this history of planetary scattering? Almost certainly this planet was scattered closer by the maelstrom. Is there at all? other planets in the distance? How has the dispersion of this planet affected the course of our own planet? It almost certainly did. So Planet 9 will offer a new challenge and a new destination for future exploration.
And I thank you. (Applause)
The name of the day came from the planet that ruled its first hour which meant the first day was governed by the sun and was named Sunday. The second day was ruled by the moon (Monday), followed by Mars (Tuesday), Mercury (Wednesday), Jupiter (Thursday), Venus (Friday) and Saturn (Saturday). .
So it all started when I was writing the genealogy of the ancient Greek gods. Yup, just the normal day. Nike, daughter of Styx and Pallas.
Rhea gave birth to six children. Eosphorus, in brackets, Lucifer. Wait, what? Lucifer? Lucifer? Just Another God in Greek Mythology? Okay, let's talk a little bit about Lucifer, who I know, who most people know.
We know Lucifer as the devil or Satan, the one who rules over hell. He is also known as Beelzebub or the Prince of Darkness. Lucifer is known in popular culture, but he comes from Jewish and Christian traditions.
The story of Lucifer is that he was once a bright and beautiful archangel, one of God's most divine creations, but when God created Adam, the first man on earth, Lucifer refused to honor him, and out of that pride God threw him out of heaven and into hell, and then he became the Lucifer who ruled over hell as we know history today, only his name was Iblis or Shaytan. Another version says that Lucifer was cast from heaven for daring to compete with God in glory. And here I see Lucifer, the ancient Greek god genealogy? This moment calls for clarification. (Thunder growls) Whoa.
You see, Lucifer is a Latin world. Well, two words, actually, and it means Bringer of Light. The Greek translation is phosphorus.
Alternatively Heosphoros. Both Latin and Greek words have been translated from the original Hebrew script, Hellel, which means the shining or the bright, from this verse here. Quick Review, so the Bible is originally a Hebrew Bible that was translated into Greek and later into Latin and then later into other languages like English, and the most popular English version is the King James version which is the one that I have stop right here, and therein the word Lucifer abides.
Helel, Phosphorus and Lucifer all refer to the morning star, to this planet. From the earliest times, constellations were very important to ancient religions. Planets and stars were personified as deities.
This second planet f From the sun, what we now know as Venus, is the third brightest object in the sky after the sun and moon and just like them it could be seen with the naked eye. The ancient Sumerians called it goddess Innana. Acadians called it Ishtar.
In Hindu astronomy, it is Saint Shukra. But this bright planet has something special. It is generally only seen twice, once at sunrise and once at sunset.
Basically when the sun is on the horizon. And because ancient cultures don't understand modern astronomy, they saw the appearance of Venus in the morning and at night as two different objects. The ancient Egyptians knew the morning star as Tiomoutiri and the evening star as the way, oh God, Ouiaiti.
For the Greeks, the morning star was Phosphorus or Heosphorus, and the evening star was Hesperus. And although the Romans recognized the two stars as a single planet, they continued to use two names, Lucifer for the morning star, and they kept Hesperus for the evening star. Know Lucifer as the devil, who n it is the planet Venus at dawn? Well, as with many, many other things in our world, all of this has to do with misinterpretation.
First, we need to know that the word Lucifer appears only once in the Bible, at Isaiah 14:12. How? Did you fall from the sky Oh, Lucifer, son of the morning. How have you been thrown to the ground, you who have weakened the peoples.
Which means that the Hebrew word Hellel was found only once in the original Hebrew text, the Ben-Shahar part, which means morning star, son of the dawn, is the honorary title given to the king of Babylon. At that time, kings were powerful people of the same rank as the stars, and this passage was a prophecy against the king of Babylon who was said to be a tyrannical oppressor of Israel. Remember that the Old Testament of the Bible, from which this passage is taken, was written by Jewish authors for the Jewish people around 600 BC.
Was written. In short, this passage is about the arrogance and fall of the kings of Babylon at that time. Some believe it alludes to a contem Porary Mythos, the ancient myth that tells how Hellel, the morning star or Venus, tried to climb the walls of the northern city of the gods to make himself king of heaven, only to be driven from heaven by the rising sun Isaiah verse, this myth is applied to the event.
The prophets who wrote the book of Isaiah said that the king is indeed like hell, but instead of the rising sun, God would prostrate him. So Lucifer was never an evil being that we had to imagine. Lucifer is a noun meaning morning star, referring to the planet Venus, and in this case, morning star was a metaphor for the Babylonian king.
It is not exactly when, but by AD 300, the original meaning of Lucifer had changed. For some reason Christian writers, or again Tertullian and Augustine of Hippo, interpreted the word Lucifer as Satan or the devil. And finally the word Lucifer became a proper name.
Lucifer is Satan and resides in Hell. Some believe that this association could be because The King of Babylon was viewed as evil and therefore identified with Satan, and later books like The Divine Comedy by Dante Alighieri and Paradise Lost by John Milton would strengthen our collective notion of who Lucifer is beautiful, bright archangel who turned himself into the devil, a word to describe a beautiful heavenly body that was described as a satan. There is always a reason for a story, and often the reason is not what we expect it to be or as glamorous as we would like it to be.
A lot can shift over time, translation for translation, interpretation and misinterpretation, nothing stays forever thanks for watching guys let me know in the comments what you think and if you liked this article like it and if you know someone who would do it too please share it. Don't forget to subscribe if you haven't already, and check out my Patreon if you want to keep supporting me. Okay bye now.
In many languages, the days of the week are named after classical planets or gods of a pantheon. In English, the names are Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday, then returning to Monday. Such a week may be called a planetary week.
Hey smart people Joe, here I checked my calendar the other day and two questions popped into my head. First, why are lambis in Jammies so smelly cute? Second, why are weeks a thing? For example, why do we divide the calendar into seven-day blocks, not eight or five? Most of the units into which we divide our calendar come from natural astronomical cycles. A year is the time it takes the earth to orbit the sun once a month, roughly the length of the moon's full phase cycle, days from the earth's rotation on its axis.
But there is no natural, terrestrial, or astronomical cycle that measures seven days in the week. Even so, almost every culture on earth today divides its calendar in this way. Some historians believe that the seven-day week is so old that it is the oldest known human institution still functioning without interruption.
That actually seems like a pretty strong idea for a week. But everything comes from somewhere. Every invention has an inventor.
So why is a week? Seven is an odd choice for the number of days in a week, and not just because it isn't even. It is also a prime number, and we cannot be evenly divided into the three hundred and sixty-five days of the year. But seven has been considered a significant number by countless cultures in religion, mythology, superstition, and folklore for thousands of years.
The seven deadly sins, the seven virtues, the seven days of creation, the seven samurai, the seven heavens, the seven chakras, the seven gods of luck and the seven of Mercury. The Mercury Seven were the first astronauts to be selected for NASA's manned space program. The spacecraft in Project Mercury was named and numbered seven, and Project Mercury laid the foundation stone that led to the landing of humans on the moon.
Incidentally, including Apollo 13, NASA originally planned seven moon landing missions. And the story of the seven-day week begins on the moon. And there are roughly, if not exactly, twelve lunar cycles in a solar year.
And that was for a farmer in five thousand BC. BC accurate enough as a basic timing. Twelve is a convenient number for several reasons.
For one, it's pretty small. You can probably even count on it. It can also be split into two parts or three parts or four or six parts, which makes it a good base for measuring things like circles.
If we draw a circle with a radius then the circle with the same radius intersecting the edge of the market. And on the other hand, these intersection points divide a circle into six equal parts to divide each one in half, and you can divide a circle into twelve equal parts without complicated measuring tools, which is handy for dividing the sky into zodiacal signs. Once a month, ancient sky watchers watch the moon circling through the twelve disks of the zodiac, a seemingly unchangeable backdrop of stars.
It is an observer on earth. The stars rotate slowly once a day, but their positions do not change relative to each other. But like the moon, some other objects that are bright enough to be seen with the naked eye seem to move on their own in stars.
These were known as wanderers or planets in Greek, and they were the moon, Mercury, Venus, Mars, Jupiter, and Saturn. And when you add in the largest and brightest wanderer, the sun, you get seven of them, originally thought to be each nestled in rotating spheres with the earth at their center. Not all of these are planets by today's definition, and that's not how the solar system works at all.
But ancient celestial watchers from the Babylonians to the Greeks and Romans, even India and China note the planets in that order based on how fast they wandered through the sky with Saturn, the planet with the longest cycle on top. And this is where astronomy becomes astrology. In many ancient cultures, each planet represented a god whose position in the sky could affect the lives of us little mortals.
Seven planets, seven gods, seven days. Can you see where this is going? “Unless things are not quite right yet. Around the third century BC In the 2nd century BC, Greek astrologers who wrote horoscopes in Egypt decided that each god would only rule for an hour, so Satan would rule for an hour and then Jupiter, Mars and so on.
But with twenty-four hours in a day and only seven planets, that cycle went into the next day each day, moving four planets down the list. And finally, after one hundred and sixty-eight hours repeating on the eighth day, this is the planetary week. And in this astrological system, each day was named after its first hour.
Or translated Saturday, Sunday, Monday, Mars day, Mercury day. A moment. That sounded really good for a minute.
But then Mars Day and Mercury Day don't really sound like Tuesday and Wednesday unless you speak Latin or one of the many languages that descended from it, like Spanish or French, as the seven-day Greek astrological week was adopted and spread by the Romans in their realm. We can clearly see the planetary roots in these language names for the days when Christianity spread across Europe, the days were renamed to align with Christian religious traditions, and the first day of the work week was moved to Monday, I mean , Monday like today. I mean then I love the moon.
Man do I hate lunar days now? Right now I hear you ask what the hell is wrong with English? Only three of them sound like Latin roots. Well, Northern European, Germanic, Anglo-Saxon and Nordic ancestors, well they took over the seven-day week, but they translated some of the day names and, for others, those of their favorite local gods instead of the Roman planets, perhaps to send a message to their Roman conquerors . Fifteen hundred years ago the seven-day week had even reached India and China.
And the names for the days of the week in Hindi and some older Chinese dialects are named after the same astronomical bodies and space gods as the Greek and Roman systems. In the same order, there is also an indigenous American culture like the Navajo without an indigenous week concept. The seven-day system was adopted immediately after contact with the Spanish and adapted to the national language.
For example, the seven-day week is used practically everywhere these days, and the naming system is not entirely universal. A few odd day names are left. Icelandic, German and Finnish literally call Wednesday the middle of the week in the Gaelic languages of Ireland and Scotland.
Wednesday to Friday all four days of fasting are mentioned. Icelandic Saturday means swimming in a pool, which sounds nice. I try to bathe every day.
Some cultures use a seven-day week, but the names of the days are simply represented by numbers, which eventually seems like a much easier way to do it. It's amazing how quickly and widely the planetary 70 week spread in the footsteps of trading and religious armies around the world. And we still use them ways today.
I mean hold on. OK, OK, OK. On the one hand, the planet week.
Well, that's not the only seven-day week we've found in history. You see, the Jewish week goes on at least five hundred BC. BC and does not come from the planets, but from the seven days of creation in the Hebrew Bible.
The first six days were counted in sequence and the seventh day a day of rest. This name, called Har, was almost certainly borrowed from the ancient Babylonian Shabi for a festival of the full moon. Hm OK, so it's obvious that there is more than one reason seven was important.
And if we really want to uncover more theories as to why seven is so important. Well the moon is a pretty good place to start now. One month in our calendar, huh? traces its origin to the cycle of the moon from full moon to crescent, back to full moon.
This big, bright thing in the night sky is one of mankind's oldest and oldest ways of tracking the passage of time. And that conveniently, but only coincidentally, coincides with the length of time between the female population and menstruation, which happens to have the same root word as the word modern, which we can trace back to the root, which means how to agree when measuring the phases of the moon measure up. And if we measure a lunar cycle, each of the four quarter moon phases is separated by about seven days.
Now there is a new moon to a full moon, which is about a fortnight or two sevens. And the average time between a new or full moon is pretty close to, but not exactly, four sevens or twenty-eight days, which is a very special series of numbers. The factors or numbers that are evenly divided into twenty-eight are one, two, four, seven, and 14, and these randomly add up to twenty-eight numbers.
With this accidental property there, the factors that add up to the number itself are called perfect to be confused with perfect letters, of which there is now only one, perfect numbers are rare, the ancient Greeks or they only knew four of them. And the next is to thirty-three million, five hundred and fifty thousand three hundred and thirty-six. The exact length of an average lunar cycle is actually just over twenty-nine days.
But seven is the nearest whole number of days between each of its quarter phases and the near-perfect number pattern. The phases of the moon centered around seven, which mathematicians would have known since at least ancient Greece. Speaking of math math, we can trace back the mystical math nature of # 7, well, the very first math ever written down, ancient clay tablets dating from around 2000 BC.
Well, the Babylonian and Sumerian scribes who wrote these were basically not a system. Now every place in our base ten system tells us the number of hundreds and tens and ones, tens, hundreds, etc. in a certain number, fill up with ten, we just roll to the next higher place.
The number two thousand and one hundred and seven point three would be two thousand one, one hundred if zero ten plus seven ones and three tenths of a base 60 system. Which works the same, the number fifty-nine. Well, you would with a. write single symbol, which means fifty-nine or fifty-nine, once the number.
Sixty and thirty. Well, that would be written with a one in place of the 60s, and well, three would like to make this easier. We can write this to the number seventy-two with our modern numbers.
Well, that would be one in place of the 60s plus 12 once. And we've put a little comma there to make it easier to read. But what about fractions? Let's take a half.
We know our decimal system, which simplifies to zero ones and five cents, or a base 60 system that would be written as zero ones and thirty-one and thirty-one sixty FS. Well, that would be zero out of twenty-six. Yes.
And a quarter or that zero one to fifteen sixty one zero one twelve sixty is one six zero and ten and a seventh hole. Well, things are nice and tight. We get it in one step.
We tried buying one to seven parts in a base 60 system. This is simplified into a repeating six as a decimal fraction. Eight.
Thirty-four. Seventy eight. Thirty-four.
Seventy eight. Thirty-four. 70 more than 4000 years ago for the Sumerian Babylonian mathematicians who invented the earliest mathematics, seven would have been the first number whose fraction is infinite.
And some scholars really believe that this helped bring out the mystical and superstitious nature, a number that is still associated with luck and superstition. Today, more than four thousand years later, I mean, perhaps, when a superstitious Sumerian astrologer noticed that seven heavenly bodies were moving across the stars, he saw it as a sign. And there are seven stars in the Big Dipper and in.
Oh, right. And in there, pastoralism. Oh what is an astronaut? Well, that's a familiar pattern of stars that is visible to the naked eye within a larger constellation, just as the Big Dipper is actually part of Ursa Major.
And of course the arrangements and brightnesses of these stars, well, they are just a coincidence thanks to the special position of the earth in space. But still, our brains love to add meanings to coincidences and certain old eyes. The universe seemed to scream that seven was special, we know that those eyes, well, they just couldn't see far because there are actually eight planets.
Don't argue about Pluto today. I need to complete this article and it's just one of them, we're orbiting the sun and the moon is not a wandering star goddess. It's actually a big damn rock that hit the earth billions of years ago.
And then it got stuck there. But by the time people found out all of this it was already seven days a week and nobody felt like changing it if they ever wondered where the rare ideas came from in the first place. It's just so old.
There is no record of who first invented it or why. And it shows us that even ideas we take for granted look like they've always been there. Of course, now you know.
What are you going to do with all this knowledge, please let go of curiosity on Monday. As always, we'd like to thank everyone who supports the show on Patriot. We couldn't do it without you.
As you can imagine, articles like this one take a lot of research to gather all of this essential information because there is a lot of it. This would not be possible without your support. And we'd love to do more articles like this one.
So take a look at our community, because seriously, I have a lot of questions. Thanks. Left for description, seven-day chunks, a seven-day week seven seven seven seven seven seven seven seven seven seven seven seven.
Why the number seven seven seven seven seven seven seven seven seven seven is centered around seven Universe seemed to shout these seven with special.
So, Venus has the longest day of any planet in our solar system. It completes one rotation every 243 Earth days. Its day lasts longer than its orbit. It orbits the Sun every 224.65 Earth days, so a day is nearly 20 Earth days longer than its year. .
When you think of a day, you usually think of a day-to-night cycle. This is called a sunny day. On earth, a sunny day lasts about 24 hours.
However, the Earth's orbit is elliptical, which means that it is not a perfect circle. This means that some sunny days on Earth are a few minutes longer than 24 hours and others are a few minutes shorter. Our solar system consists of eight planets orbiting the sun.
There are also five planets identified as dwarf planets and other smaller solar objects that together also orbit the sun. There are four planets that are categorized as inner planets: Mercury, Venus, Earth, and Mars, and they are among the smallest. On the other hand, there are terrestrial planets that are mostly made up of metals and solid rocks, and they are the four outer planets also known as giant planets that include Jupiter, Saturn, Uranus, and Neptune.
The planets Saturn and Jupiter are the largest and they are gas planets made up of helium and hydrogen, while Neptune and Uranus are the outermost planets and they are made up of volatiles like methane, ammonia and water. The definition of a day is the time it takes for an astronomical object to complete a full rotation about its axis. A day on Earth is 23 hours and 56 minutes, but other planets and bodies rotate at different speeds.
The moon, for example, revolves around its axis once every 29.5 days. This means that future inhabitants of the moon will have to get used to a solar 'day' which lasts about 14 earth days and a year 'night' which lasts about the same length.
Scientists usually measure days on other planets and astronomical objects in relation to Earth Day. This standard is used throughout the solar system to avoid confusion when discussing events that occur in these worlds has a different length, whether it is a planet, moon, or asteroid. When it rotates on its axis, it has a 'day and night' cycle.
Another way to measure a day is to count the time it takes for a planet to rotate completely and make a full revolution. This is known as sidereal day. A sidereal day on Earth lasts almost exactly 23 hours and 56 minutes.
We know how long an Earth day lasts, but what about the other planets in our solar system? long do these planets take to rotate a full turn? and what's the best way to show the answer to that question? we here at DON'T QUIT have the answer for you. let's see the difference. 1 .
Mercury The Planet Mercury takes 58.6 Earth days or 1408 hours to turn once around its axis. That may seem long, but consider: his year is only 88 earth days! This is because it orbits very close to the sun.
However, there is a twist: Mercury is gravitationally related to the sun in such a way that it rotates three times around its axis every other orbit around the sun. If humans could live on Mercury, every two Mercurians would experience a full day (sunrise to sunrise) years.2.
Venus Planet Venus rotates around its axis so slowly that one day on the planet is almost 243 Ea. takes days or 5,832 hours. Because it is closer to the sun than the earth, the planet has a 225-day year.
So the day is actually longer than a year, which means that the people of Venus would only see two sunrises a year. Another fact to remember: Venus rotates 'backwards' on its axis compared to Earth, which means that these two annual sunrises occur in the west and the sunsets in the east Minutes, Martian Day is very similar to Earth, which is one of the reasons Mars is often thought of as Earth's twin. However, since Mars is further away from the sun than the earth, its year is longer than the earth with 687 earth days.
Jupiter When it comes to gas giant worlds, the 'day length' is more difficult to determine. The outer worlds have no solid surfaces, although they have solid cores covered with huge layers of clouds and layers of liquid metallic hydrogen and helium underneath the clouds. On the gas giant planet Jupiter, the equatorial region of the cloud belt, it rotates at a speed of nine hours and 56 minutes, while the poles rotate significantly faster at nine hours and 50 minutes.
The 'canonical' (i.e. generally accepted) length of day on Jupiter is given by the rotational speed of. determines its magnetic field, which is nine hours and 55 minutes long. 5.
Saturn Based on measurements of various parts of the gas giant Saturn (including its cloud layers and its magnetic field) by the Cassini spacecraft, planetary scientists determined that the official length of Saturn's day was ten hours and 33 minutes. 6. Uranus Uranus is a strange world in many ways.
The most unusual thing about Uranus is that it has tilted on its side and 'rolls' around the sun on its side. That is, one axis or the other is directed towards the Sun for part of its 84-year orbit. The planet rotates once around its axis every 17 hours and 14 minutes.
The length of the day and the length of the Uranian year and the strange axial inclination add up to a day that is as long as a season on this plan et.7. Neptune The gas giant planet Neptune has a day length of about 15 hours.
It took scientists several years to calculate the rate of rotation of this gas giant atmosphere. No spacecraft has visited Neptune since Voyager 2 in 1989, so Neptune's day must be studied from the ground. 8.
Pluto The dwarf planet Pluto has the longest year of all at 248 years known planets (so far). Its day is much shorter, but still longer than Earth, with six Earth days and 9.5 hours.
Pluto is tilted on its side at an angle of 122 degrees to the sun. As a result, for part of the year, parts of the surface of Pluto are in either continuous daylight or constant night. I hope this knowledge will help you.
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This means that Jupiter has the shortest day of all the planets in the Solar System. Since Jupiter is a gas planet, it does not rotate as a solid sphere. Jupiter's equator rotates a bit faster than its polar regions at a speed of 28,273 miles/hour (about 43,000 kilometers/hour).
Thursday, 'Thor's day,' gets its English name after the hammer-wielding Norse god of thunder, strength and protection. The Roman god Jupiter, as well as being the king of gods, was the god of the sky and thunder. Thursday comes from Old English ??nresd?g. Friday is named after the wife of Odin.7 2014 .
Libra: Ruled By Venus
Venus is all about romance and pleasure, so it's no surprise that this decadent planet would have enough love to share with two zodiac signs. In addition to Taurus, Venus also rules over air sign Libra, which is the sign of balance and relationships. .
How is 1 hour in space equal to 7 years on Earth: space.
Jupiter is the fastest spinning planet in our Solar System rotating on average once in just under 10 hours. That is very fast especially considering how large Jupiter is. This means that Jupiter has the shortest days of all the planets in the Solar System.
According to international standard ISO 8601, Monday is the first day of the week. It is followed by Tuesday, Wednesday, Thursday, Friday, and Saturday. Sunday is the 7th and last day of the week.
Then the remaining five days of the week are named after gods: Tuesday was named for the Germanic god of war, Tiu; Wednesday was named for Woden, the supreme creator among the Norse gods; Thursday was named for Thor, the Norse god of thunder; Friday was named for Frigga, the Norse goddess of marital love and the hearth ...
This sequence of the planetary rulers of the days of the week follows the beams of seven-point star, or heptagram, also known as the Star of the Magi. And after this, the cyclical sequence of planets is always the same: … – Saturn – Jupiter – Mars – Sun – Venus – Mercury – Moon- …
Not only that, when you know which planet rules each day, but it could also reveal some very interesting information about your life. The notion that planets rule each of the days of the week goes back much further than this poem.
Sunday (dimanche in French) is ruled by the Sun. “But the child born on the Sabbath Day is fair and wise and good and gay” might refer to the magnanimous Sun nature. Astrologers generally pay more attention to the ruling planets in a natal chart.