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11 Cards in this Set
- Front
- Back
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What galaxy is the Sun in?
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Milky Way
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Light from other galaxies is ___-_______.
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Red-Shifted
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What does red-shift tell us?
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That other galaxies are moving away from us
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CMB radiation
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Cosmic microwave background radiation.
This is the low frequency electromagnetic radiation coming from all parts of the universe. |
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It is highly likely that the universe started with the ___ ____ approximately __ _______ years ago
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Big Bang
14 Million |
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Nebula
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Clouds of dust and gas that go on to form stars
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Main sequence star
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Period of stability in a star's lifetime.
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Why is the 'Main sequence star' stage described as being stable?
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The outward pressure created by heat is equal to the inward pressure of gravity. They balance and the star is stable.
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White dwarf
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Hot, dense solid core of left behind after a small star ejects it's outer layer
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SETI
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Search for Extra Terrestrial Intelligence
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What is the SETI group looking for?
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Radio signals form other planets.
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