| A | B |
|---|
| shuttles | spacecraft that travel frequently from one place to another |
| roving | moving from one place to another |
| sphere | shaped like a ball |
| basin | a hole shaped like a bowl (dent) |
| microbes | tiny organisms that can only be seen with a microscope |
| rays | beams of light or energy |
| ultraviolet | relating to electromagnetic radiation |
| range | the area nearby |
| mammoth | enormous |
| solar system | the sun and planets that orbit it |
| cosmic | related to outer space |
| conquest | the take-over of a place by force |
| telescope | device used to view things that are far away |
| advanced | having new ideas or techniques |
| poles | the points on which a planet rotates |
| diameter | the widest part of something that is shaped like a circle |
| crater | a very large hole |
| colossal | unusually large |
| base | the bottom part of something |
| astronomers | scientists who study the sun, stars, and planets |
| gravity | the pull of Earth on an object |
| cargo | goods carried or shipped |
