astronomy 101

-Orange stars:
1. Betelgeuse
2. Antares
3. Aldebaran
4. Arcturus
-Blue stars:
1. Rigel
2. Spica
3. Vega
-There are 88 constellations.
- Constellations where beta is brighter than alpha:
1. Orion
2. Gemini
-Bayer letters = stellar designation in which a specific star is identified by a Greek letter
- ten brightest stars as seen from earth
1. sirius
2. canopus
3. rigil kentaurus
4. arcturus
5. vega
6. capella
7. rigel
8. procyon
9. achernar
10. betelgeuse
-ten closest starts to earth
1. proxima centauri
2. alplha centauri a
3. alpha centauri b
4. barnard's star
5. wolf 359
6. lalande 21185
7. sirius a
8. sirius b
9. uv ceti a
10. uv ceti b
- phobos and deimos = the moons of mars
-major meteor showers
1. quadrantids
2. lyrids
3. eta aquarids
4. delta aquarids
5. perseids
6. orionids
7. taurids
8. leonids
9. geminids