For Your Personal Rocketship Ride To The Stars - Visit Hubblesite

G'day Space Cadets! http://hubblesite.org/hubble_discoveries/hstexhibit/

		Hubble works on the same principle as the first reflecting telescope built in the 1600s by Isaac Newton. Light enters the telescope and strikes a concave primary mirror, which acts like a lens to focus the light. The bigger the mirror, the better the image. In Hubble, light from the primary mirror is reflected to a smaller secondary mirror in front of the primary mirror, then back through a hole in the primary to instruments clustered behind the focal plane (where the image is in focus).