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Stars

Unit 2 Lesson 2

TermDefinition
Star A large celestial body that is composed of ga and that emits light; the sun is a typical star (56,66)
Apparent Magnitude The brightness of a star as seen from Earth (68)
Luminosity The actual brightness of an object such as a star.
Absolute Magnitude measure of how bright star would be seen if it were from a standard distance.
Nebula A cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter.
Nuclear Energy The energy released during nuclear fission or fusion, especially when used to generate electricity.
Super Nova A star that suddenly increases greatly in brightness because of a catastrophic explosion that ejects most of its mass.
Created by: 4801809294
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