Across
- 4. station a large artificial satellite used as a long-term base for manned operations in space
- 5. the distance between two corresponding parts of a wave
- 6. a flight of a spacecraft past a celestial body close enough to obtain scientific info; the first stage in space exploration
- 8. telescope a device used to detect radio waves from objects in space
- 10. a spherical body, larger than a comet or asteroid, that orbits the Sun, or similar body that orbits a different star
- 11. the NASA mission that made the first lunar landing, July 20, 1969 - Neil Armstrong and Buzz Aldrin with Mike Collins in orbit
- 12. NASA's program focused on reaching the moon
- 13. the Russian space station where Russian and U.S. astronauts carried out joint missions
- 14. space and all the matter and energy in it
- 17. telescope a telescope that uses a set of lenses to gather and focus light from distant objects
- 18. a collection of stars, dust, and gas bound together by gravity
- 19. light spectrum the portion of the electromagnetic spectrum that is visible to the human eye (R.O.Y.G.B.I.V.)
- 21. a spacecraft designed to orbit a planet, moon, or other body without landing on the body's surface; the second stage in space exploration
- 22. an optical instrument that forms enlarged images of distant objects
- 23. the International Space Station; built by scientists from Russia, the U.S. and 15 other nations
- 25. a craft designed to land on a planet's surface
- 26. a group of stars that form a pattern in the sky
Down
- 1. a competition of space exploration between the United States and the Soviet Union that took place from 1955 to 1975
- 2. telescope a telescope that uses a curved mirror to collect and focus light
- 3. the path that a body follows as it travels around another body in space
- 7. the spinning of Earth on its axis
- 9. system the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets
- 10. A spacecraft that is sent into a planet's atmosphere or onto a solid surface
- 15. a broad range of related qualities; especially those that overlap to create a continuous series (as in a color spectrum, where each color blends into the next in a continuous way)
- 16. an object (either artificial or natural) that revolves around another object in space
- 20. crater a round depression formed on the surface of a planet, moon, or other space object by the impact of a meteorite
- 24. spectrum the complete range of electromagnetic waves placed in order of increasing frequency