UNIVERSE
PLANETARY FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True or False:Earth’s orbit around the Sun is a perfect circle.
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True
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False
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Either A or B
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None of the above
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Explanation:
Detailed explanation-1: -Earth orbits the sun once every 365 days, or one year. The shape of its orbit is not quite a perfect circle. It’s more like an oval, which causes Earth’s distance from the sun to vary during the year.
Detailed explanation-2: -Earth’s orbit is an ellipse with the Earth-Sun barycenter as one focus and a current eccentricity of 0.0167. Since this value is close to zero, the center of the orbit is relatively close to the center of the Sun (relative to the size of the orbit).
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