Earth Science : Astronomy Question?

brooke

New member
Okay so here's the question

The Milky Way galaxy is best described as
1- a type of solar system
2- a constellation visible to everyone on Earth
3- a region in space between the orbits of Mars and Jupiter
4- a spiral- shaped formation composed of billions of stars

** I thought the answer was 4, but the answer key in my book says 3? ... can someone explain why its 3? lol thanks so much!!
 
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