Astronomy Crossword

2. Earth’s neighbor that is similar in size but much much hotter
4. spheres of hot glowing gas and dust
6. in between mars and jupiter lies this region of space with over 100,000 asteroids.
7. a term for low mass stars
11. The H in HR diagram stands for ___________________ .
14. an explosion when a high mass star dies and blasts away the outer material
16. this star system is closest to us.
18. An area of intense gravitational attraction that even light cannot escape

1. the name of the galaxy that is closest to us
3. A theory that explains the origin of the universe
5. The extremely hot center of a star where nuclear fusion occurs
8. small atoms combine to larger atoms and release incredible amounts of energy in a process called nuclear _____________ .
9. The HR diagram graphs stars based on their __________ and luminosity.
10. The most abundant element in the universe
12. Red-shifting is one piece of evidence that shows our universe is …
13. stellar nurseries
15. The force responsible for the creation of stars. Also a force that keeps us on Earth.
17. The name of our galaxy