2018
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Astronomers recently found a ’cold super-Earth’. The planet has been labeled _________
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Barnard’s Star e
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Barnard’s Star g
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Barnard’s Star b
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Barnard’s Star d
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Explanation:
Detailed explanation-1: -Lacking atmosphere, its temperature is likely to be about minus 170 degrees Celsius, which makes it unlikely that the planet can sustain liquid water on the surface.
Detailed explanation-2: -The orbit of a planet around the Sun (or a satellite around a planet) is not a perfect circle. It is an ellipse-a “flattened” circle. The Sun (or the center of the planet) occupies one focus of the ellipse. A focus is one of the two internal points that help determine the shape of an ellipse.
There is 1 question to complete.