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1
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Sudden release of energy from the Sun
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4
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Large glowing ball of gas in space
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6
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Distance that light travels in a vacuum in a year, about 9.5 trillion kilometers
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7
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an explosion so violent that the dying star becomes more brilliant than an entire galaxy
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10
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A stream of electrically charged particles that flow outward from the Sun
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12
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Brightness of a star as it appears from Earth
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14
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A spinning neutron star that appears to give off strong pulses of radio waves
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16
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the middle layer of Sun’s atmosphere
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17
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dying star surrounded by a cloud of glowing gas
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18
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Their light is shifted toward the red wavelengths
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20
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Used to determine how stars or galaxies or approaching or moving away from Earth.
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22
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Area in the photosphere that are cooler than surrounding gas
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23
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optical instrument designed to make distant objects appear nearer
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24
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A set of dark lines that show where light has been absorbed
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25
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Contracting cloud of gas and dust with enough mass to form a star
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26
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the universe began in an instant, billions of years ago, when the universe was about two thirds of its present size
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27
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Person who invented the telescope
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28
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large bright stars that are smaller and fainter than supergiants
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29
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Outer layer of Sun’s interior
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31
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Sun’s central region where nuclear fusion happens
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33
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diagonal band on H-R diagram
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