| A | B |
|---|
| astronaut | Person who engages in or trains for space flight. |
| atmosphere | A mixture of gases that surround a planet. |
| NASA | National Aeronautics and Space Administration; a U.S. federal agency. |
| orbit | The curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, such as the sun. |
| gravity | The force which pulls toward the center of the Earth. |
| space capsule | : A vehicle or compartment of a vehicle designed to transport, protect and support humans or animals in outer space or at very high altitudes in and beyond the Earth’s atmosphere. |
| soloar system | The sun and the group of celestial bodies that are held by its attraction and revolve around it. |
| rocket | A space capsule or vehicle put into orbit. |
| module | a part of a spacecraft that has special a special use and can be separated from the rest of the craft |
| thrust | sudden, strong push or force |
| hatch | an opening in the deck of a ship or spacecraft that leads too other decks |
| tranquility | the absence of motion or disturbance |
| mankind | human beings as a group; the human race |
| lunar | of or having to do with the moon |
| mission | a special job or task |
| panels | a board containing the dials, instruments, and controls for running something |
