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Astronomy I

Mr. Power

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1.A device used to detect radio waves from objects in space
4.The wave with the longest wavelength on the electromagnetic spectrum
8.All space and everything in it.
10.A lens that is thicker in the middle than at the edges
12.Our galaxy
13.Patterns of stars in the sky
14.A building with one or more telescopes
16.Light you can see with you eyes
18.Start system with two stars
20.The wave with the shortest wavelength on the electromagnetic spectrum
21.A reflecting telescope that orbits the Earth
22.When do most astronomers have to work
23.When as star is moving towards the Earth, its wavelength shortens, when this happens the spectrum shifts towards this color.
24.Distance between the crest of one wave and the crest of the next wave
25.Interstellar cloud of gas and dust
26.Type of telescope that uses a mirror
1.When as star is moving away from Earth, its wavelength lengthens, when this happens the spectrum shifts towards this color.
2.Energy that can travel directly through space in the form of waves
3.Visible light has a very ____________ wavelength
5.Most stars are composed of 73% of this element
6.Galaxies that have no regular shape
7.Type of telescope that uses a convex lens
9.A galaxy looks like a flatten ball and has only old stars
11.An instrument that breaks down light from an object into colors
15.A cluster of hundreds of billions of stars
17.Our Star
18.The birth of the universe
19.A galaxy with outstreched arms

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