Answer / Chitra Gautam

The Moon was likely formed around 4.5 billion years ago as a result of a giant impact event. A Mars-sized object is believed to have collided with Earth, and debris from this collision coalesced to form the Moon.

Explain how can space expand faster than the speed of light?

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Sam langley invented what instrument, which allows astronomers to measure the energy output of the sun and other stars?

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What is the effect of gravity at the center of a planet?

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Explain how big is the universe?

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How many black holes are there?

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What is the term for the amount of energy released from each square meter of an objects surface each second?

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Explain how have some stars had time to die since the universe began?

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How many moons do mars have?

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How stars produce energy?

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How many moons do Jupiter planet have?

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How can space expand faster than the speed of light?

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How old is this universe?

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