universe

1. Hole A region of space having a gravitational field so intense that no matter or radiation can escape.
3. A celestial body that orbits a star, such as Earth or Mars.
6. An object placed in orbit around a celestial body, such as a moon or planet.
9. A luminous point in the night sky that is a large, remote incandescent body.
10. The star at the center of our solar system, providing light and heat.
12. Station A large spacecraft in orbit around the Earth used as a base for scientific research.
13. A celestial object that orbits the Earth, seen in the night sky.
14. A celestial object consisting of a nucleus of ice and dust that develops a bright tail when near the sun.
15. A vast, cloud-like mass of gas and dust in space.

2. A group of stars forming a recognizable pattern in the night sky.
4. A vehicle designed for travel or operation in outer space.
5. An optical instrument that gathers and magnifies light to observe distant objects.
7. A person trained for space travel and exploration.
8. A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
11. Unidentified Flying Object, an object observed in the sky that is not readily identified.