Stars

2. smallest star group of two stars
6. icy chunk of frozen gases, water, and dust that orbits the sun.
7. irregularly shaped pieces of rock, metal, and dust that orbit the sun between Mars and Jupiter
8. large group of stars close enough to be held together by gravity
11. early versions of telescopes that bend, or refract, light to make objects look larger
12. a supergiant's collapsed core composed mostly of neutrons
13. when a meteoroid lights up because of the movement through the earth's atmosphere
15. the distance that light travels in one year
17. huge star system containing millions or billions of stars and covers many lightyears
19. the scientific study of the stars and heavenly objects
20. when the core of a supergiant collapses because of the gravitational force and it disappears from space
21. a cloud of interstellar gases and debris
22. rocky object smaller than an asteroid
23. a star at the center of our solar system that provides light and heat for Earth

1. stars that regularly change in magnitude
3. the apparent movement or change in position of one star compared to other stars
4. when an object moves away from the earth and its colors' wavelengths become longer, the colors shift towards the red end of the spectrum
5. a group of stars in a pattern
9. a meteor that hits the earth's surface
10. constellations that revolve around the north star
14. a neutron star that spins rapidly on its axis
16. stars with average or low luminosity, mass, and size
18. the brightness of a star