1. Life of a Star

2. Nebula A cloud of dust and gas in which new stars form

3. Nebula

7. Star -uses Hydrogen as fuel

10. Nebula Star -uses Hydrogen as fuel Red Giant -uses Helium as fuel

11. Red giant Stars that begin to expand as they use up their fuel

14. Antares Star in the Scorpio Constellation

15. Betelgeuse Star in Orion Constellation

16. Aldebaran Star in Taurus Constellation

17. Nebula Star -uses Hydrogen as fuel Red Giant -uses Helium as fuel White Dwarf -no fuel

18. White Dwarf When helium is used up, the outside layers of gas float off and only the core will remain

19. NGC 2440 – one of the hottest white dwarfs

20. Sirius A – 18,000°F Sirius B – 44,900°F

21. Nebula Star -uses Hydrogen as fuel Red Giant -uses Helium as fuel White Dwarf -no fuel Black Dwarf -thermal energy cools

22. Black Dwarf When a white dwarf completely cools down. This is completely hypothetical.

23. Nebula Star -uses Hydrogen as fuel Red Giant -uses Helium as fuel White Dwarf -no fuel Black Dwarf -thermal energy cools Supernova (binary star system)

24. Nebula Star -uses Hydrogen as fuel Red Giant -uses Helium as fuel White Dwarf -no fuel Black Dwarf -thermal energy cools Supernova (massive star) (binary star system)

25. Supernova When a massive star cools, its core will shrink until it can’t shrink anymore. The sudden stopping sends out shock waves and a huge explosion

26. "After" and "Before" pictures of Supernova 1987A Closest and brightest supernova observed in 400 years

27. SN1987A, pictures taken in 1994

28. Picture taken in 2004

29. Animation of SN1987A Supernova

30. Cassiopeia A Supernova, youngest supernova in Milky Way Galaxy 1667

31. Crab Nebula exploded in 1054

32. Nebula Star -uses Hydrogen as fuel Red Giant -uses Helium as fuel White Dwarf -no fuel Black Dwarf -thermal energy cools Supernova (massive star) (binary star system) Neutron Star -spins -gives out radio waves  “pulsar”

33. Neutron Star A leftover ball of neutrons after a supernova

34. 2,000 year old remnants of RCW 103 Supernova

35. Crab Nebula is the remnants of a supernova explosion. In the center is a neutron star

36. Nebula Star -uses Hydrogen as fuel Red Giant -uses Helium as fuel White Dwarf -no fuel Black Dwarf -thermal energy cools Supernova (massive star) (binary star system) Neutron Star -spins -gives out radio waves  “pulsar” Black Hole

37. After a supernova, the remaining core of the star can shrink into a black hole. This is a point in space with such a strong force of gravity that nothing within a certain distance of it can escape getting pulled in, not even light.

39. This image taken by the Chandra X-ray Observatory, shows a region at the center of our own Milky Way galaxy that appears to host a supermassive black hole.

40. This artist's illustration shows a black hole, together with its whirling disk of matter, hurtling like a cannonball through the disk of our own galaxy.

41. http://hubblesite.org/explore_astronomy/black_ holes/index.htmlhttp://hubblesite.org/explore_astronomy/black_ holes/index.html

42. The Life Cycle of a Massive Star