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12 Cards in this Set
- Front
- Back
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Meteroid |
A meteroid is a piece of metal or rock in our solar system that is smaller than an asteroid |
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Asteroid |
Asteroids are small celestial objects in the solar system composed of rock or metal |
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Astronomy |
The scientific study of what is beyond the earth |
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Star |
A massive collection of gases, held together by its own gravity and emitting huge amounts of energy |
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Black hole |
An extremely dense quantity of matter in space from which no light can escape |
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Light year |
Is an astronomical unit used to measure the distance that light, travels in a vacuum in 1 year |
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Constellation |
A grouping of stars as observed from earth |
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Comets |
A chunk of ice and dust travels in a very long orbit around the Sun |
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Meteor |
Small body of matter from outer space that enters the earth's atmosphere |
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Low mass stars |
Consume hydrogen over 100 billion years Die and become a white dwarf Cool further and fade into a black dwarf |
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Intermediate mass star |
Consume hydrogen over 10 billion years Outer layers expand- planetary stage Outer layers shed to become a planetary nebula Remains of core is a hot iron neutron star Fades to a white dwarf |
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Massive star |
Consume hydrogen over 7 billion years Expands to red supergiant After fusion, core collapse-causes massive shock waves/explosions/supernova Remnants of supernova are either end up as a neutron star or a black hole |
