Question

what is galaxy and it's secret
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Answer 1

Explanation:

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle.

Answer 2

• Galaxy is a gravitationally bound system of planets, stars, interstellar gas, dust, and dark matter.

• The Universe is filled with galaxies. Galaxies come in a number of shapes and sizes.

• Our Galaxy is called “The Milky Way”. The Milky Way is 100,000 light years across and contains our solar system and other star systems. Our Galaxy contains 100 to 400 billion stars which is vastly more Stars than Population of humans on Earth.

• The next nearest galaxy is Andromeda. It is 2.537 million light years away.

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