Across
- 3. What has all of space in it?
- 5. a giant cloud of dust and gas in space.
- 6. a star at the heart of our solar system.
- 8. a huge collection of gas, dust, and billions of stars
- 9. a twisted collections of stars and gas
- 11. a giant ball of hot gas
Down
- 1. a celestial body that is in orbit around the Sun
- 2. smallest galaxies and are full of gas and dust.
- 4. hole so dense that gravity just beneath its surface
- 7. have an even, ellipsoidal shape.
- 8. a force by which a planet or other body draws objects toward its center
- 10. diagram what do you use to find the brightness of a star?