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LS Chapter 5-life of a star
BIRTH & DEATH OF A STAR
cloud of dust & gas drawn together by gravity
material in this nebula bigins to give off energy
star gives off energy for billions of years
star uses up hydrogen
star collapses-causes increased fusion & energy
star swells to red giant or supergiant
star collapses again-explodes as nova or supernova
small star becomes a white dwarf, large star becomes a neutron star or black hole