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Earth/Science Vocab.
09.29.14
Term | Definition |
---|---|
Star | a fixed luminous point in the night sky that is a large, remote incandescent body like the sun. |
Apparent Magnitude | the magnitude of a celestial object as it is actually measured from the earth. |
Luminosity | the intrinsic brightness of a celestial object (as distinct from its apparent brightness diminished by distance). |
Absolute Magnitude | the magnitude (brightness) of a celestial object as it would be seen at a standard distance of 10 parsecs. |
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 supernova is a stellar explosion that is more energetic than a nova |