| A | B |
| constellation | a group of stars that form a shape or pattern |
| stellar | excellent, better than all |
| asterisk | a star-shaped symbol on a keyboard |
| astronomy | study of the stars and space |
| astrology | using the stars to predict the future |
| asteroid | a piece of rock that flies through space |
| astronaut | a person trained to work in space |
| astrodome | a clear dome in an aircraft for viewing the stars and sky |
| astronomical | huge, much bigger than expected |
| astronomer | a scientist who studies stars and space |