black holes

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18 08, 2017

What is gravity? Physics

By |2019-03-01T04:44:58-07:00August 18th, 2017|Physics|0 Comments

What is gravity? The Moon orbiting Earth (taken from space) - NASA What does gravity do? Gravity attracts all objects towards each other. Gravity has been around since the very beginning of the universe, and it works the same way everywhere in the universe, on all kinds of different objects, of all different sizes [...]

18 08, 2017

What is a galaxy? – Astronomy – Space science

By |2019-06-29T09:19:08-07:00August 18th, 2017|Physics|0 Comments

The galaxy M 100, seen through the Hubble telescope What is a galaxy? A galaxy is a group of millions of stars that are relatively near each other. Most stars seem to be in one or another galaxy. Earth's own star, the Sun, is in the Milky Way galaxy. What is the sun made of? What are [...]