Question

1. What is galaxy?
2. What is univers?​

Answer 1

Answer:

Galaxy:- system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

Universe:-all existing matter and space considered as a whole; the cosmos. The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.

Explanation:

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Answer 2

Answer:

1. A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark metter.

2.The universe is believed to be at least 10 billion light years in diameter and contains a vast number of galaxies; it has been expanding since its creation in the Big Bang about 13 billion years ago.

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