Across
- 1. the blue-white core of the star that is left behind cools and becomes a white dwarf
- 3. name of the star that we revolve around
- 4. the color of very hot stars
- 5. the measure of the amount of matter in an object
- 9. the category that has the largest stars
- 10. the process by which atoms combine to form heavier atoms
- 11. type of star that is the most stable
- 12. a contracting cloud of gas and dust with enough mass to form a star
- 13. large cloud of gas and dust spread out in an immense volume
- 14. color of the coolest stars
- 15. spinning neutron stars
Down
- 2. the measurement allows scientist to compare the brightness of stars
- 6. this is a sudden explosion. It occurs when a star called a supergiant runs out of fuel.
- 7. the remains of high-mass stars. A neutron star may contain as much as 3 times the mass of the sun but be only about 25 kilometers in diameter, the size of a city.They are even smaller and denser than white dwarfs.
- 8. an object with gravity so strong that nothing, not even light, can escape.