astronomy

1. – Another word for the universe as an ordered, harmonious system.
6. – An object that orbits a planet; can be natural or man-made.
9. – A rocky object that orbits the sun, mostly found in a belt between Mars and Jupiter.
11. – The curved path of a planet or object around a star or planet.
12. – A region in space where gravity is so strong that nothing, not even light, can escape.
14. – A tool used to observe distant stars and planets.
15. – A huge system of stars, dust, and gas bound together by gravity.

2. – A space rock that burns up in Earth's atmosphere (a "shooting star").
3. – The force that pulls two bodies toward each other.
4. – When one celestial body blocks light from or to another.
5. – The second planet from the Sun, often called Earth’s “sister planet.”
7. – A cloud of gas and dust in space, often a birthplace for stars.
8. – The distance light travels in one year — about 5.88 trillion miles!
10. – A massive explosion marking the death of a star.
13. – A space object made of ice and dust that glows with a tail when near the sun.