| A | B |
|---|
| closed | A universe that expands and comes back together repeatedly |
| quasars | very distant |
| gravity | a force that tends to pull together matter in stars |
| spectrum | A band of colors formed when whitel light passes through a prism |
| red shift | Galaxies that are mvoing away from Earth have a light spectrum called |
| open universe | the universe will eventually die and become emptiness. |
| novas | stars that suddenly increase in brightness and then get dim |
| corona | outermost layer of the sun's atmosphere |
| sunspot | one type of solar storm |
| solar flare | a type of solar storm |
| prominence | solar storm |
| spectroscope | an instrument used to break the light from stars into its colors. |
| irregular galaxy | has no specific shape |
| spiral galaxy | shaped like a pinwheel |
| elliptical galaxy | flat, disc-like |
