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Astronomy 1-

constellations patterns of stars in the sky
electromagnetic radiation energy that can travel directly through space in the form of waves
visible light light you can see with your eyes
wavelength the distance between the crest of one wave and the crest of another
spectrum the range of colors with different wavelengths
refracting telescope uses convex lenses to get large amounts of light into a smaller area
convex lens a piece of transparent glass, curved so that the middle is thicker than the sides
reflecting telescope a telescope that uses mirrors instead of convex lenses
radio telescopes a device used to detect radio waves from objects in space
observatory a building that contains one or more telescopes
spectrograph breaks light from an object into colors and photographs the resulting spectrum
Created by: 1902