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Stars & Galaxies

vocabulary words

TermDefinition
Constelation Patterns of stars in the night sky
Absolute Magnitude The measure of the amount of light it gives off.
Apparent Magnitude A measure of the amount of light received from a star on light from Earth.
Light Year Distance that light travels in one year. 300,000 km/s
Photosphere The lowest layer of the Suns atmosphere - the layer from which light is given off.
Chromosphere The layer of the Sun above the photosphere.
Corona The largest layer of the Sun's atmosphere; extends millions of kilometers into space.
Sunspots The areas that appear dark on the sun; they are cooler than the area surrounding the spot.
Nebula A large cloud of dust and gas where stars begin to form.
Giant Star A star that is in the late stage of its life cycle
White Dwarf A star about the size of Earth, eventually it cools and stops giving off light.
Super Giant A massive star that continues to heat up and contains very heavy elements that form by fusion.
Neutron Star The core of a star that has collapsed and only neutrons exist.
Black Hole The core of a supernova that has collapsed inward on itself - gravity is so great not even light can escape.
Galaxy Large group of stars, gas, and dust held together by gravity.
Big Bang Theory The leading theory about the formation of the universe.
Created by: tgalyean
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