Earth's orbit is an ellipse, not a perfect circle. Earth's distance from the Sun varies by about 3 million miles throughout the year. Earth's orbit's semimajor axis is approximately 93 million miles.
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New research says Theia and Earth once orbited as close neighbors
New modeling of the early solar system is reshaping the familiar story of how the Moon formed, suggesting that Earth and the ...
How is it possible for the ISS to stay in orbit? Learn more about the science behind orbiting Earth and more in this NASA ...
More objects are being launched into space than ever, and most are headed for low Earth orbit. This region of space has become increasingly crowded with launches from SpaceX and others that have ...
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