Spitzer's Orion

This is an infrared image of the constellation Orion. Orion, a stellar nursury some 1,500 light years away, is visible to the unaided eye under moderate view conditions. This image of Orion, taken from The Spitzer space telescope ,reveals cloud discs orbiting certain stars, raising the possibility that entire solar systems may be forming in Orion. Nebulae like Orion are like cities inhabited by stars. Astronomers predict that as many as 90% of stars in out galaxy are found in these swarming stellar cities.