... The Pleiades Star Cluster . ... Perhaps the most famous star cluster on the sky, the Pleiades can be seen without binoculars from even the depths of a light-polluted city. ... Young Star, Dark Cloud . ... High-speed outflows of molecular gas from a young stellar object glow in infrared light, revealing themselves in this recent false-color image from the Spitzer Space Telescope. ... Layered Hills on Mars . ... Comet Encke Returns . ... The Andromeda Galaxy from GALEX . ... Express to Mars . ...