Nebula • Massive collection of dust and gas in the universe. • Can be: • Nursery for new stars • Graveyard for dead stars • Recycling center for stars
stars • Stars - massive spheres of gases. • Energy – produced by fusion of elements • Fusion – combining of one element to form a new element releasing energy in the form of the EM spectrum.
Red giant • When H is used up balance of pressure and gravity no longer exists and it expands into a larger star. • Outer atmosphere expand and cool • red
White dwarfs • White dwarf in center of this planetary nebula. • Core of a dying star • Extremely dense star • Its atmosphere collapses in on itself. • Gravity pulls in the heavier material • Very hot
Supergiants and super novas • Supergiant – massive star size of solar system that takes up Jupiter’s orbit. • - Fe core • - can no longer fuse new elements • - core implodes exploding violently into super nova.
Neutron star • A neutron staris a type of remnant that can result from the gravitational collapse of a massive star. • Neutron stars are very hot