Answers

2016-04-19T13:26:41+05:30
The Universe is all of time and space and its contents. The Universe includes planets, natural satellites, minor planets, stars, galaxies, the contents of intergalactic space, the smallest subatomic particles, and all matter and energy.
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2016-04-19T13:29:41+05:30
A galaxy is a huge system of billions of stars, and clouds of dust and gases.
Millions of such galaxies together is called as universe.

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