1. The Life Cycle of Stars This is the death of a star (supernova) viewed by Tycho 400 years ago it was so bright you could see it with the naked eye

2. The Life Cycle of Stars Nebula AAAAA BBBBBB CCCCCCC DDDDDDDD EEEEEEEEE FFFFFFFF

3. The Life Cycle of Stars Nebula Main Sequence Star Red Giant White Dwarf Supernova Neutron Star Black Hole

4. Nebula All stars begin as a ball of gas & Dust in space

5. Venus and the International Space Station crossing the sun. Main Sequence Star Has a Temp. Near 5,000 -6,000 C Nuclear fusion occurs at the core converting Hydrogen to Helium. A star’s longest stage. The stage of our SUN

6. The stars expands to 10 – 100 times its original size The star has used all of its hydrogen fuel. The center shrinks. Red Giant

7. White Dwarf These are small hot stars near the end of their life. Has a Temp. Near 10,000 C Left over centers of old stars remain at this stage.

8. Supernova This is the death of a large star by explosion Generates a HUGE amount of light, brighter than a whole Galaxy, and may be seen with naked eye.

9. Neutron Star The materials are squeezed together so hard by gravity electrons and protons become neutrons.

10. Black Hole Left over from a supernova and very massive So massive light can not escape. The mass of 3 suns and about 6 miles across