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Astronomy Crossword Puzzle

Across
The magnitude of an object as seen from earth
A small rocky body orbiting the sun
A graph in which absolute magnitude and temperature of a star are recorded
The brightness of a celestial object
The range of wavelengths of frequency over which electromagnetic radiation expands
A celestial object of a nucleus consisting of ice and dust
A noticeable change in the frequency of sound, light, or water
A cloud of gas and dust in outer space usually spotted at night
Down
A giant hot ball of gas in all different sizes, brightness, colors, and temperatures
Brightness of a celestial object as seen from a distance of 10 parsecs
The displacement of spectral lines toward longer wavelengths
Main part of a stars life cycle
The theory on how the earth became a planet and a popular TV show
Shorter wave lengths in light as a celestial object moves closer to the observer
All existing matter and space considered as whole
A system of millions or billions of stars held together by a strong gravitational pull