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Because the Sun holds 99.87% of all the mass in the solar system, it's always going to win the tug of war. Even if all the planets were perfectly lined up on one side of the Sun, the center of mass would be just 800,000 kilometers off the surface of the Sun. That sounds like a lot, but remember, our solar system is big! Such a barycenter would be roughly 70 times closer to the Sun than the closest planet to the Sun, Mercury.

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The discovery that Earth revolves around the Sun was revolutionary. It fundamentally changed how we viewed the cosmos, as well as ourselves.

But the Earth does not revolve around the Sun. At least, not exactly . Time to get pedantic.

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Every single object in the solar system, from the gargantuan sun to the tiniest speck, exerts a gravitational pull on everything else. The solar system is basically a massive game of tug of war, and all of the yanking balances out at a specific point: the center of mass, or "

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An even better illustration for center of mass is the binary star system . When two stars of comparable mass cohabit the same corner of space, they orbit about a point between each other.

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However, rather than play a billion-year game of cosmic tag, more often than not, binary stars will take an elliptical orbit!

The rest of the universe certainly doesn't revolve around the Earth, but, like so many topics in science, it's an oversimplification to say that everything orbits a...

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"Technically, what is going on is that the Earth, Sun and all the planets are orbiting around the center of mass of the solar system," writes Cathy Jordan, a Cornell University Ask an Astronomer contributor.

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CURATED FROM

Technically, Earth Does Not Orbit Around the Sun | RealClearScience

realclearscience.com

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CURATED BY

Mahian Kabir

@mr.kabir

I like to write motivational quotes. I like to motivate others. I like to observing people. I'm always crazy and curious about all kinds of knowledge. Always believe in yourself, think positive, stay positive, stay true, do good & spread positivity !

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Orbit and rotation

Mercury's highly eccentric, egg-shaped orbit takes the planet as close as 29 million miles (47 million kilometers) and as far as 43 million miles (70 million kilometers) from the Sun. It speeds around the Sun every 88 days, traveling through space at nearly 29 miles (47 kilometers) per second, fa...

Every single object in the solar system, from the gargantuan sun to the tiniest speck, exerts a gravitational pull on everything else. The solar system is basically a massive game of tug of war, and all of the yanking balances out at a specific point: the center of mass, or "

"Technically, what is going on is that the Earth, Sun and all the planets are orbiting around the center of mass of the solar system," writes Cathy Jordan, a Cornell University Ask an Astronomer contributor.

"...

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