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15 Cards in this Set
- Front
- Back
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Stars that regularly change in magnitude are called ___ ___.
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variable stars
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Name two kinds of variable stars:
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1.pulsating variable star
2.eclipsing variable star |
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_____ variable stars are actually a pair of stars that orbit each other.
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eclipsing variable stars
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______ form when one star in a pair of stars flares up when the other star's gravity pulls on it.
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nova
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____ means "new" in Latin.
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nova
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The __ ___ was the brightest nova seen in recent history.
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Nova Cygni
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A cloud of interstellar gases and debris is called a ____.
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nebula
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The death of a star is called a ________.
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supernova
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A supernova occurs when a star uses up its _____ fuel.
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hydrogen
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The destruction of a star can cause a ____ ____ or a ___ ___.
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neutron star or black hole
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The ___ ___ is the closest nebular to Earth caused by a supernova.
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Crab Nebula
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Why does supernovas become neutron stars?
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Because the extreme pressure of the supernova crushes the protons and electrons together to form neutrons.
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A_______ is a neutron star that spins rapidly on its axis.
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pulsar
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When a collapsed star's core cannot stop collapsing, it forms a __ ___, that pulls everything into it, including light
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black hole
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Why can we not see a black hole?
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Because it pulls light into its core, leaving everything around it completely black.
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