Question

define universe
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Answer 1

Answer:

• 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.

Answer 2

Answer:

hii!!

The universe is all of space and time and their contents, including planets, stars, galaxies, and all other forms of matter and energy. The Big Bang theory is the prevailing cosmological description of the development of the universe

Explanation:

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