| A | B |
|---|
| discovered | it is seen or found for the first time |
| lunar | it has to do with the moon |
| satellite | a vehicle sent out from the earth to revolve around the earth, moon, sun, or a planet |
| astronauts | travelers in spacecraft |
| crescent | shape of the visible moon during about the first week after the new moon or the last week before the next new moon |
| footprint | a mark made by a foot or a shoe |
| visible | can be seen |
| surface | the outside of something |
| craters | a hole ( as in the surface of the moon) formed by an impact (meteorite) |
| spacecraft | vehicle used for getting around in space |
