Question

define universe and our milky way galaxy

Answer 1

Answer:

Until the early 1920s, most astronomers thought that the Milky Way contained all the stars in the Universe. ... The Milky Way is a barred spiral galaxy with an estimated visible diameter between 170,000 and 200,000 light-years (ly). It is estimated to contain 100–400 billion stars and at least that number of planets.

Answer 2

Answer:

Our Solar System consists of our star, the Sun, and its orbiting planets (including Earth), along with numerous moons, asteroids, comet material, rocks, and dust. Our Sun is just one star among the hundreds of billions of stars in our Milky Way Galaxy. ... The universe is all of the galaxies – billions of them!

Explanation:

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