Across
- 3. The force that attracts a body towards another physical body having mass
- 5. The astronaut on Earth that communicates with the crew in space
- 7. A massive ball of gas that releases extreme amounts of energy
- 10. The fraction of the Moon that we see illuminated by sunlight
- 11. A collection of stars, gas, and dust that ranges from 10,000 to 100,000 light years in diameter
- 12. A distinct, named pattern of stars
- 13. A small rocky body that orbits the sun
Down
- 1. A spiral galaxy also known as Messier 31
- 2. A supermassive black hole gorging on gas at the center of a distant galaxy
- 4. An event that occurs when the shadow of a planet or moon falls on another body
- 6. Clouds of glowing gas
- 7. A star ending its life in a huge explosion
- 8. The fifth planet from the sun
- 9. The distance that light travels in one year
- 14. A mathematical model that intertwines the dimensions of space and time into a single four-dimensional manifold