Across
- 1. A celestial body that revolves around a planet.
- 3. Large and small rocks or metallic masses orbiting the sun.
- 4. Remains of meteoroids that strike the surface of the earth or the moon.
- 6. The force of attraction that pull objects towards each other, controls the motion of our solar system.
- 7. The luminous celestial body around which the Earth and other planets revolve and from which they receive heat and light.
- 9. A natural chunk of rock or dust existing outside of Earth’s atmosphere.
- 11. The National Aeronautics and Space Administration. An American government agency dedicated to space exploration.
- 13. Any of the large celestial bodies that revolve around the sun in the solar system.
- 14. The investigation of physical conditions in space and on stars, planets and other celestial bodies.
- 17. Something that orbits around another object, can be natural or man-made.
- 18. A vehicle or device designed for travel or operation outside Earth’s atmosphere.
- 19. The father of modern science, made improvements to the telescope and discovered the 4 largest moons of Jupiter.
Down
- 2. a building or place that is equipped for observation of natural phenomena.
- 5. An orbiting space satellite that began construction in 2001 with the cooperation of 16 countries.
- 8. Small meteoroid that burns upon entry of Earth’s atmosphere.
- 10. An unmanned spacecraft designed to explore the solar system and transmit data back to Earth.
- 12. An optical instrument for viewing distant objects.
- 15. A celestial body of ice, dust, and rock with an elongated and elliptical orbit.
- 16. A ball of gas in space that produces its own light and heat.
- 18. A reusable spacecraft designed for travel or operation outside Earth’s atmosphere.