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The Life Cycle of Stars: From Nebula to Black Holes

Explore the fascinating journey of stars through the cosmos, beginning in stellar nurseries known as nebulae, where hydrogen fuels their birth. As stars evolve, they can become red giants, burning helium, or white dwarfs that eventually cool to become black dwarfs. The dramatic end of massive stars leads to spectacular supernovae, leaving behind neutron stars or black holes, points of gravity so strong that not even light can escape. This journey reveals the intricate processes that govern the life cycles of stars in our universe.

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The Life Cycle of Stars: From Nebula to Black Holes

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  1. Life of a Star

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

  3. Nebula

  4. Nebula Star -uses Hydrogen as fuel

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

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

  7. Antares Star in the Scorpio Constellation

  8. Betelgeuse Star in Orion Constellation

  9. Aldebaran Star in Taurus Constellation

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

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

  12. NGC 2440 – one of the hottest white dwarfs

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

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

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

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

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

  18. 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

  19. SN1987A, pictures taken in 1994

  20. Picture taken in 2004

  21. Animation of SN1987A Supernova

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

  23. Crab Nebula exploded in 1054

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

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

  26. 2,000 year old remnants of RCW 103 Supernova

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

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

  29. Black Hole 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.

  30. http://hubblesite.org/explore_astronomy/black_holes/index.htmlhttp://hubblesite.org/explore_astronomy/black_holes/index.html

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