Meaning of universe and black hole

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Meaning of universe and black hole

Posted by Adesh Mondal 8 years, 1 month ago

CBSE > Class 08 > Science

1 answers

Amar Kumar 8 years, 1 month ago

The universe is the whole of space and all the stars, planets, and other forms of matter and energy in it. The Universe can be defined as everything that exists, everything that has existed, and everything that will exist. According to our current understanding, the Universe consists of spacetime, forms of energy (including electromagnetic radiation and matter), and the physical laws that relate them.

A black hole is a place in space where gravity pulls so much that even light can not get out. The gravity is so strong because matter has been squeezed into a tiny space. This can happen when a star is dying. Because no light can get out, people can't see black holes. They are invisible.

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CBSE > Class 08 > Science