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Astronomy_5
Question | Answer |
---|---|
what are galaxies | collections of billions of stars |
what is our solar system apart of | the milky way |
what sort of shape is the milky way | spiral |
what are black holes | the end of the lifetime of supergiant stars |
what do black holes in the middle of a galaxy allow | stars to gain velocity |
what does that velocity do | allows starts to orbit around and away from the center of mass |
what is the top speed of spacecraft | 150,000 miles per hour |
how far away is the nearest star travel | 24 trillion miles away |
at 150,000 miles per hour how long would it take to get to the nearest star | 166 million years to get there |
how are distances in our universe measured | light years |