| A | B |
|---|
| person who studies the sun, planets and stars | astronomer |
| means in addition to or also | besides |
| round hole in a bowl shape | crater |
| unit for measuring warmth | degree |
| step by step | degree |
| distance in the center of circle | diameter |
| to look steadily | gaze |
| force that pushes something away | gravity |
| being serious | gravity |
| think carefully about something | reflect |
| to turn or throw back | reflect |
| object made closer | telescope |
| all of space and objects in space | universe |
