Workers at the University of Arizona Steward Observatory Mirror Lab have cast the first mirror for the Giant Magellan Telescope.…
Look east this weekend and you'll see a bright red star blazing in the night sky. That's not a star,…
One of the hazards of human spaceflight is the radiation damage of solar storms and cosmic rays. But it turns…
A preliminary investigation by the Russian Failure Investigation State Commission has determined that a flight control system in the Rockot's…
Geologists have come up with two measurements of radioactive decay to calculate when the Earth's core separated from its crust,…
A Russian Kosmos 3M launcher blasted off from the Plesetsk Cosmodrome this morning carrying a satellite designed and built by…
This image is a mosaic of 15 photographs of Saturn's rings taken by Cassini. The strange ripples are caused by…
The massive Large Binocular Telescope, mounted atop Mount Graham in Arizona achieved a major milestone on October 12 with its…
Eleven teams competed in two competitions over the weekend to test technologies for space elevators: beam-powered climbers and new ribbon…
Venus Express was all set to launch, but ESA engineers discovered that small particles were contaminating the spacecraft, so the…