What is how does universe differ from a galaxy?

Answer 1

A galaxy is a collection of stars and the universe is the collection of galaxies.

Of the estimated 300 billion galaxies in the known universe, our Milky Way galaxy is only one, a massive cluster of gas and stars.

We are only at the beginning of our understanding of galaxies and the universe, so our knowledge of it is extremely limited due to its size and our ability to study and understand what we can see. Astronomers currently estimate that the universe is about 45 billion light years in size, but they are not entirely sure.

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Answer 2

A galaxy is a vast group of stars, dust, and gas held together by gravity. The universe is the totality of all space, time, matter, and energy, including galaxies.

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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.

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.

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.

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.

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