| A | B |
|---|
| crater | a large hole in the ground |
| universe | entire physical world |
| spectrum | band of colors that white light is separated into |
| astronomer | scientist who studies heavenly bodies |
| constellation | group of stars that form a pattern |
| comet | bright heavenly body made of ice and dust |
| satellite | object that orbits in space |
| revolve | to make in a circle around something else |
| celestial | relating to the sky |
| meteor | shooting star |
