Answer / Neha Saini

"They are dark, volcanic plains"

Do black holes really exist?

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Is there water in moon rock?

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Is the gravitational pull on an object equalized if the object is at the center of a planet, i.e. Surrounded by the mass of the planet, which is creating the gravity?

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When did solar system come into existence?

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How stars produce energy?

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How far from earth, is the moon?

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How many black holes are there?

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How many black holes exist?

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Maria on the moon are?

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If gravity only attracts mass and if light does not have mass why does it appear to bend when passing a planet?

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Mars has a thin atmosphere composed mainly of what gas?

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Tell me how many planets are now in the solar system?

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