Why Does The Earth Orbit Around The Sun?

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Since the dawn of time, humans have pondered the question – why does the Earth revolve around the Sun? The answer lies in the powerful force of gravity, which binds the Sun and the planets together in our Solar System.
The Earth is held in orbit by the Sun’s gravity. The Sun’s gravitational force is strongest at its center, therefore, planets that are closest to the Sun will be pulled in tighter. This is why the Earth’s orbit is elliptical, meaning it is closer to the sun at certain points and farther away at others. As far as we know, this dance will last as long as the sun dies.

Nowadays, it is not hard for us to believe in such things: everything seems quite normal and trivial to us. But if we go back, we soon realize how difficult it for humankind was to reach this self-consciousness level. Back then, scientific concepts weren’t as trivial as you think. 

Follow me in this video to get to know more about the forces that keep the Earth, the moon, and other planets around the sun. Spoiler alert: the same laws apply to exoplanets and exomoons. 

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Credits: Nasa/Shutterstock/Storyblocks/Elon Musk/SpaceX/ESA/ESO/ Flickr

Video Chapters:
00:00 Introduction
01:15 Heliocentrism
03:16 Observational evidence
03:40 Kepler’s three laws of planetary motion.
05:56 Stability of the orbits
07:20 Exoplanets and Exomoons
09:20 Kepler 1625

#insanecuriosity #earth #sun
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InsaneCuriosity
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The Earth's orbit is elliptical but not because gravity is stronger the closer you are to the sun. It's elliptical because the original forces that set the Earth in motion made it so.

atillathehungry
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heliocentrism was first discovered in ancient India way before 1473. they never believed in geocentric theory. from the beginning of Vadas and Upanishad, they knew that the earth was revolving around the sun and not the other way around. they also knew that the Earth was spherical in shape since they called the study of the Earth (geography) bhūgola which has the literal meaning of bhū = earth and
gola = sphere

btw I am not Indian

controversychaos
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Another great question and what a great heavenly dance to be a part of! ❤

mm-dwrr
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Those Cool Worlds videos on exomoons are pretty cool. Looks like the people that make this channel watch them as well.

Nightscape_
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hey dude, Under the heliocentric model, as the earth travels around the sun, each day the earth will be a little less than one degree further in its orbit from the previous day. That means that every 6 months the earth will be 180 degrees in its orbit around the sun and be opposite the sun from where it was 6 months earlier. There is a problem with this model. Let us assume that we begin our observation of the sun at 12:00 noon in New York on September 22nd. Each solar day is precisely 24 hours in length. According to the heliocentric model, every 24 hour day, the earth is supposed to do an exact 360 degree spin on its axis and end up at the same place. At the same time, each day the earth has travelled a little less than one degree of the 360 degree orbit around the sun. that means that after 6 months, 12:00 noon in New York will arrive during the middle of the dark night on March 21st.

To recap, 12:00 noon arrives in the middle of the day in New York on our start day on September 22nd. The heliocentric theory requires the earth to be at the opposite side of the sun 6 months later. Consequently, New York will be on the dark side of the earth facing away from the sun at 12:00 noon on March 21st. in New York, therefore, on March 21st, 12:00 noon should arrive during the middle of the night. Under the heliocentric model, this occurrence should happen year-in and year-out, every year. We know, however, that does not happen, which means the heliocentric model is wrong.

ROBERTPUNU
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Because sun has bigger gravitational pull to earth than earth has to sun...? I still laugh at ppl who thought sun orbits earth. Note that they were all americans which makes it even more hilarious.

Semirotta
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This should be the shortest video on yt: Gravity

EvilJ
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So you are saying that WE revolve around Ra's fiery chariot? That is whacky - why would he be in a chariot if he wasn't moving across the sky?

Mr_Oggie
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From the illustration you showed, the exoplanet was too small to have an exomoon that far away. You said another planet couldn't share an orbit because they would eventually crash into each other. I know we look at other Solar Systems working like our own. Is it possible that another planet is the same distance from its sun, but at a different level? Above or below the other planet's orbit?

myspin
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Just an FYI "The Ancient Greeks primarily learned from the civilizations of Egypt and Mesopotamia; Greek thinkers often traveled to Egypt to study their advanced knowledge in fields like astronomy, mathematics, and medicine, building upon existing knowledge to develop their own sophisticated philosophical and scientific culture". I know this gets omitted alot when explaining where the greeks would have gotten their ideas from.

soundgoddsent
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The Sun being "active" has little to nothing to do with planetary orbits.

richardmercer
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What If Mercury and Vesta switched places
What If Ceres and Venus switched places

stellarstargazer
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Obserbal Universe, Universe, Multiverse, Omniverse

Powerful-zz
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It is a balancing act of motion. It is something to do with the escape velocity of the earth. It is lower than needed to escape the gravitational field of the sun. At the same time the orbital velocity is fast enough not to be pulled into it.

geoffreythomas
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Wow you really have think about this !

amangogna
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We don't "Orbit" around the sun... we're being drargged along, through the cosmos... and flung around our star.

johhanwindsalor
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Ive watched a few videos and their comments are turned off because they think summer is because of the tilt and they NEVER DISCUSS that the revolution of the Earth during summer is closer to the sun and not the tilt. Sure it affects the north and south pole but the tilt is not the reason for seasons. The revolution during summer is closer to the sun.

michaelbren
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our Sun is Binary with Sirius A, B, C in which we have a 26, 800year orbit, being drawn towards Sirius for 12, 400years, and away again for 12, 400 years. This is the ages, as our Suns output varies, with more energy as we get closer, less as we move away. This is the explanation of the Golden age, and the Dark age. We have just turned the corner, now moving towards Sirius again, heading back to the Golden light, more life energy.

whynotcreatelove
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The orbits are neither circular nor elliptical. They're helical.

MeowAdi