Across
- 4. A region of space with gravity so strong that nothing, not even light, can escape.
- 7. No defined shape or structure
- 8. A collection of gas, dust, stars, and solar systems
- 9. A cloud of gas and dust in space where stars are born or remnants of dead stars.
- 10. Galaxies with a central bulge and "arms" that spiral outwards
Down
- 1. Made up of all the celestial objects like planets and asteroids
- 2. A group of galaxies bound together by gravity.
- 3. Shaped like ovals and have stars spread throughout
- 5. Invisible matter that makes up most of the universe's mass but doesn't emit light.
- 6. A distant, highly energetic galaxy with a supermassive black hole at its center.