Across
- 1. A region of space between the orbits of Mars and Jupiter where most of the asteroids in our Solar System are found orbiting the Sun.
- 4. National Aeronautics and Space Administration
- 7. A bright trail or streak of light that appears in the night sky when a meteoroid enters the Earth's atmosphere.
- 9. A mixture of gases that surrounds the Earth.
- 10. A fixed luminous point in the night sky which is a large, remote incandescent body like the sun.
- 12. A group of stars forming a recognizable pattern
- 14. A person who is trained to travel in a spacecraft.
Down
- 2. A continuous area or expanse which is free, available, or unoccupied.
- 3. A celestial body moving in an elliptical orbit around a star.
- 5. A small rocky body orbiting the sun.
- 6. A giant cloud of dust and gas in space.
- 8. A celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun.
- 11. A cylindrical projectile that can be propelled to a great height or distance by the combustion of its contents, used typically as a firework or signal.
- 13. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
- 15. The star around which the earth orbits.