Across
- 2. - the force that attracts a body toward the center of the earth, or toward any other physical body having mass. (Sun). The force that controls everything in the universe.
- 7. Shuttle - a rocket launched spacecraft able to land like a plane, used to make repeated journeys between Earth and Earth’s orbit. ( Reusable )
- 8. - a small, rocky body that orbits the Sun; a large asteroid belt lies between Mars and Jupiter.
- 10. Unit (AU) - a unit of measurement equal to 149. 6 million kilometers, the mean distance from the center of the Earth to the center of the Sun.
- 13. Planets / Gas Giants - the gas giant planets have no solid surface, and their orbit lies outside the asteroid belt. ( Jupiter, Saturn, Uranus, and Neptune )
- 14. / Terrestrial Planets - the planets that have a solid rocky surface and whose orbit lies within the asteroid belt. ( Mercury, Venus, Earth,and Mars )
- 15. - an elongated rocket propelled spacecraft used to take astronauts, equipment, and supplies into space.
- 16. - a celestial body moving in a elliptical orbit around a star.
- 17. - a person who is trained to travel and work in space.
- 19. - the physical universe beyond the Earth’s atmosphere. The near vacuum extending between the planets and the stars, containing small amounts of gas and dust.
- 22. - a small piece of matter from outer space that becomes a streak of light when it falls through the Earth’s atmosphere and burns up, also known as a falling or shooting star.
- 23. Space Telescope (HST) - a large space telescope designed to take and send back pictures of planets, stars, galaxies, etc.
Down
- 1. / Revolution - one complete orbit made by a planet or satellite around another object in space. It takes Earth one year or 365 days to orbit the Sun.
- 3. / Rotation - the spinning of an object on its axis. The rotation of the Earth takes one day, approximately 24 hr.
- 4. - a optical instrument designed to make distant objects appear nearer, containing an arrangement of lenses or mirrors.
- 5. Space Station (ISS) - a large artificial satellite used as a long term base for manned operations and research in space.
- 6. - the path that one object in space follows as it revolves around another object in space.
- 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.
- 11. - any natural or artificial body that orbits around another object in space. Natural satellites include planets, moons, comets, etc. Artificial satellites include, space station, probes, communication satellites.
- 12. - a natural satellite of any planet. Our moon which is visible mostly at night and reflects light from the Sun.
- 18. Probe - an unmanned exploratory spacecraft designed to transmit information about its environment.
- 20. - an object that orbits the Sun; made of frozen water and dust, and has a tail of gas and dust particles that point away from the Sun. ( dirty snowball )
- 21. gravity - the force of gravity at the surface of the Earth or other celestial bodies.