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22 Cards in this Set
- Front
- Back
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Big Bang Theory.
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The theory that the universe was created by an explosion.
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Galaxy.
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A collection of stars, gas, and dust. A galaxy is held together by gravity.
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Milky Way.
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The galaxy that our solar system is in.
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Light Year.
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The distance light travels in one year.
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Prominence.
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An arch of hot gas coming from the sun.
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Solar Nebula.
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A disk of dust and hydrogen gas. (molecular cloud)
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Corona.
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Gas outside the chromosphere.
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Supernova.
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These occur when a supergiant star dies and condenses its core into a compact mass.
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Black Hole.
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The gravitational field is so strong that not even light can escape it.
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Neutron Star.
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This consists of a very dense mass of neutrons. This is formed in the core of the supernova.
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Main Sequence Star.
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A period in a stars life. This is the longest period in a stars lifetime and it's usually converting hydrogen into energy.
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Red Shift.
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A light from stars comes at the Earth.
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Nuclear Fusion.
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The power that fuels the sun and stars. This fusion releases energy.
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Solar System.
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Includes nine planets and the sun. This also includes the moon.
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Planetesimal.
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Small bodies of gas and dust. Orbited the sun during formation of the planets.
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Solar Wind.
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Plasma ejected from the sun outward from the corona. This plasma consists of mostly electrons and protons.
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Solar Flare.
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Eruption of hydrogen in the chromosphere of the sun. This may last between several hours and several days.
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Sunspot.
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Dark, irregular spots on the surface of the sun. This can last for a few days to many weeks or more.
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Photosphere.
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The visible part of the sun from Earth.
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Aurorae.
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Charged particles from solar wind, channeled through Earth's magnetic field.
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Red Giant.
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A giant star with the lowest temperature giving it a reddish color. Not a main sequence star.
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White Dwarf.
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A small, very dense, white star with a high temperature and luminosity. Final stage.
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