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What is a galaxy in terms of space?

Answer 1

The Galaxy is a large group of stars and associated matter like gas,dust,etc that are found throughout the universe.

It is held together by the gravity.The Universe comprises of many galaxies. The Planet 'Earth' ,where we live is located in a galaxy known as Milky way.

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Answer 2

Luca de

A galaxy is a massive, gravitationally bound system that consists of stars, stellar remnants, interstellar gas, dust, and dark matter. These components are held together by mutual gravitational attraction. Galaxies come in various shapes and sizes, ranging from spiral and elliptical to irregular. They are the building blocks of the universe and contain billions to trillions of stars.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.