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Star Cycle Vocab

Star Cycles

QuestionAnswer
Main-Sequence Star
Red Giant
Nebulae
H-R Diagram
Black Hole A theoretical massive object, formed at the beginning of the universe or by the gravitational collapse of a star exploding as a supernova, whose gravitational field is so intense that no electromagnetic radiation can escape.
Supernova The explosion of a star, possibly caused by gravitational collapse, during which the star's luminosity increases by as much as 20 magnitudes and most of the star's mass is blown away at very high velocity, sometimes leaving behind an extremely dense core.
Luminosity The brightness of a star in comparison with that of the sun: the luminosity of Sirius expressed as 23 indicates an intrinsic brightness 23 times as great as that of the sun.
Nuclear Fusion A thermonuclear reaction in which nuclei of light atoms join to form nuclei of heavier atoms, as the combination of deuterium atoms to form helium atoms.
Apparent Magnitude
Super Giant
White Dwarf
Absolute Magnitude The magnitude of a star as it would appear to a hypothetical observer at a distance of 10 parsecs or 32.6 light-years.
Pulsar one of several hundred known celestial objects, generally believed to be rapidly rotating neutron stars, that emit pulses of radiation, especially radio waves, with a high degree of regularity.
Neutron
Created by: crharrison
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