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Stars

Define this vocabulary in your science notebook.

TermDefinition
constellation a small group of visible stars that form a pattern when viewed from Earth
galaxy a group of millions of stars, clouds of gas, and dust that move together through the universe
supernova the explosion of a star
black hole an area where gravity is so strong that nothing around it can escape, not even light
astronomy the study of the universe and everything in it
universe everything that exists in space
stars huge glowing balls of gases
spiral galaxy a galaxy with "arms" coming from a bulge in the center
elliptical galaxy a dim galaxy with a football shape, oldest type of galaxy
irregular galaxy a galaxy that does not have a set shape, youngest type of galaxy
barred spiral galaxy a type of spiral galaxy with a bright line through the middle
navigation finding the way from place to place
asterism a pattern of stars, but not a constellation
legend a traditional story handed down from a long time ago
luminosity measure of brightness
apparent brightness how bright or dim a star LOOKS because of how far away it is
 



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