Across
- 2. this galaxy has no particular shape and are full of gas and dust with a lot of star formation going on within them.
- 4. last stage of a massive star's life this occurs as the star runs out of nuclear fuel and some of its mass flows into the core.
- 6. the range of wavelengths or frequencies over which a certain radiation extends
- 7. make up majority of stars on the H-R diagram these stars can range from bright and hot to dim and cool.
- 11. a vast open space which contains all the matter and energy in existence. Contains all of the galaxies, stars, nebulae, and planets. Still expanding outward as a result of a violent, powerful explosion that occurred about 13.7 billion years ago known as the Big Bang.
- 12. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.
- 14. the actual brightness of a star
- 15. the stage in a star's life cycle that occurs after the main sequence stage for only small to medium mass stars.
- 17. huge, hot, brilliant balls of gas located trillions of kilometers away from Earth.
- 18. the galaxy that contains our Solar System, with the name describing the galaxy's appearance from Earth: a hazy band of light seen in the night sky formed from stars that cannot be individually distinguished by the naked eye
- 19. a graph that shows the relationship between a star’s surface temperature and it’s absolute magnitude or luminosity (brightness).
- 20. a rocky mass that orbits the sun.
- 22. the smallest and coolest kind of star on the main sequence.
- 23. an apparatus for producing and recording spectra for examination
- 24. this galaxy is made of mostly old stars, shaped like stretched circles and do not have much gas and dust.
Down
- 1. the core left behind after a supernova.
- 3. a cloud of gas and dust in space made primarily of hydrogen and helium.
- 5. a rock that survives its passage through the earth's atmosphere such that part of it strikes the ground.
- 8. a stage in a star's life cycle that occurs after the main sequence stage for only high mass to extremely high mass stars.
- 9. the stage in a star's life cycle that occurs after a giant star stage. A dense, planet-sized star that has exhausted all of its nuclear fuel.
- 10. forms when very massive stars collapse at the end of their life cycle. A large area in space with a very strong gravitational pull.
- 13. this star is currently in the main sequence is a yellow dwarf star, and is considered to be middle aged and has been in existence for approximately 4.3 billion years.
- 16. a galaxy that has stars, gas and dust that are spread outward from the galaxies center and contain a lot of gas, dust and newly forming stars.
- 21. a rock that burns and vaporizes upon entry into the Earth's atmosphere.