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Universe


1.

The smallest planet in the solar system is

Answer : C. Mercury

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2.

A meteor is

Answer : B. a piece of matter which has entered the earth's atmosphere from outer space

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3.

The colour of a star is an indication of its

Answer : D. temperature

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4.

One astronomical Unit is the average distance between the

Answer : A. Earth and the Sun

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5.

Day and night are the result of

Answer : A. earth's rotation around itself

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6.

Hubble' is

Answer : C. A space telescope

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