spaceflight english-enlish explanations
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Created by:
classroom65 on March 3, 2010
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15 terms
Terms | Definitions |
|---|---|
 celestial bodies | all objects seen in the sky (the Sun, Moon, stars, and planets) |
| satellites | any object (natural or artificial) that revolves around another object in space |
| space probe | an unmanned spacecraft that gathers info about objects in spaceand sends it back to earth |
| spacecraft | A craft designed for travel in space beyond the earth's atmosphere. |
| telescope | a tool that gathers light to make far away objects appear close |
| reflecting telescope | optical telescope that uses a concave mirror to focus light |
| refracting telescope | optical telescope that uses a double convex lens to bend light |
| International Space Station (ISS) | a permanent laboratory built by many nations in the Earth's atmosphere |
| weightlessness | the condition of experiencing little or no pull of gravity that astronauts feel in space. |
| Apollo | NASA missions that first allowed a human to walk on the moon |
| Gemini | NASA missions that practiced connecting spacecraft in orbit around the Earth |
| Mercury | NASA missions that first allowed humans to orbit the Earth |
| rocket | special engine that can work in space and burns liquid or solid fuel |
| space shuttle | a reusable spacecraft that can carry cargo, astronauts, and satellites to and from space |
| radio telescope | a device used to detect radio waves from objects in space |
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