Background decoration Click to see the Early Reflectors era. Click to see the Early Refractors era. Click to see the Galileo era. Click to see the Great Refractors era. Click to se the Huge Refractors era. Click to se the Multiple Mirrors Telescope era. Click to see the Newtonian era. Click to see the Radio  era. Click to see the Solar Telescope era. Click to see the Space Telescope era. Click to go to the Get to the Root of It explanations. Telescopes from the Ground Up title decoration. Return to the Amazing Space website.

Explore the history
of telescopes, from Galileo to NASA's Great Observatories.