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Stars and Universe

TermDefinition
Luminosity the total amount of energy radiated by an object every second.
Magnitude a measure of the brightness of a star
Light Year the distance that light travels in 1 yr (Equals 9.46 x 10^12 km)
Star huge sphere of very hot plasma
Nebula A cloud of dust and gas in space
Protostar A forming star that has not yet reached the point where sustained fusion can occur in its core.
Red giant Large stars that are bright but cooler in temperature
White Dwarf A small, hot, dim star that is the leftover center of an old star
Supernova A gigantic explosion in which a massive star collapses and throws its outer layers into space
Neutron Star Collapsed core of a supernova consisting of a small, extremely dense ball of neutrons
Black Hole Made of matter so massive that nothing ( including light) can escape it's gravity, created when a very massive star explodes
Nuclear fusion The process by which two or more atoms fuse to make an atom of a different element. Hydrogen fuses into helium inside most stars.
hot stars Blue in color
cold star Red in color
spectrograph An instrument that separates light into colors to determine what gases are present in the star
Created by: SCMSLevi
 

 



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