Across
- 4. smaller stars, like our sun
- 7. the scientific study of stars
- 8. a neutron star that spins rapidly on its axis
- 10. when an existing star flares up and becomes brighter than normal, it's called a ___
- 12. stars that regularly or repeatedly change in magnitude
- 15. this is a group of 2 or 3 stars held together by gravity
- 16. a large group of stars held together by gravity
- 17. this contains two stars
- 18. the largest and brightest stars
- 21. when a massive supergiant star collapses and disappears from space, scientist call what is left a ___
- 23. a group of stars that form a pattern
- 24. this type of telescope bend light to make objects seem larger
Down
- 1. the galaxy of which we live is called the ___
- 2. stars ___ light
- 3. the closest star to Earth
- 5. this color of star is the coolest
- 6. these are made of irregularly shaped pieces of rock, metal, and dust
- 9. the measurement of a star's apparent movement over time
- 11. a cloud of dust, gases, and debris
- 13. these break starlight into its colors
- 14. glowing balls of gases that produce light
- 19. a huge star system that covers many light-years of space
- 20. the brightness of a star is called its ___
- 22. this color of star is the hottest
- 23. a chunk of frozen gases, water, and dust that orbits the sun