'Little interstellar matter' diaporamas de présentation

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Milky Way and other Galaxies

Milky Way and other Galaxies. Galaxy- a collection of stars, dust, and gas bound together by gravity -Galaxy contain millions or billions of stars -There are more than 100 billion galaxies

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What is galaxy and how many different kinds are there?

What is galaxy and how many different kinds are there?. By : Flavio Gutierrez. What is a Galaxy?. Massive Consists of: Stars Dust Dark matter Contains Planets Stars Moon. en.wikipedia.org. Big Bang Theory. Cosmological Model 13.8 billion years ago How the universe started.

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