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1
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A galaxy with no regular shape
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4
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the final stage in the life cycle of some stars; the remnant of a star that is so dense that not even light can escape its gravity field.
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5
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a contracting cloud of gas and dust; the earliest stage of a star’s life
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7
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A late stage in the life of a star when the outer layers expand
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8
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the distance between one crest of a wave and the next crest
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9
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A galaxy with little gas and dust, made up of old stars
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10
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an increase in the wavelength of radiation given off by a moving celestial body
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11
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the number of complete cycles of a wave
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12
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a large cloud of gas and dust that may be the beginning of a new star
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13
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The entire range of electromagnetic radiation
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18
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an object in space that consists of a mass of hot, glowing gas that generates energy by nuclear reactions.
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19
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Any of various devices used to observe distant objects by detecting and collecting radiation
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22
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All of space and everything in it
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24
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That apparent change in position of an object when seen from different places
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27
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the remaining hot core of a star after its outer layers have expanded and drifted out into space
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30
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the explosion of a dying giant or supergiant star
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32
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A galaxy with arms that spiral outward, like a pinwheel
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33
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a distance galaxy with a black hole at its center
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