| A | B |
|---|
| atmosphere | the air that surrounds the earth |
| craters | holes in the ground shaped like bowls |
| incredible | amazing |
| probes | spacecraft carrying scienific recording instruments |
| spacecraft | a vehicle used for flight in outer space |
| asteroids | any of the thousands of small planetary bodies that revolve around the sun |
| hazy | unclear; clouded |
| meteorites | masses of stone or metal that have reached the earth from outer space |
| meteroids | fallen meteors |
| solar system | the sun and all the planets and comets that revolve around it |
