Amateur Observers Are Seeing Double
As Derek Breit headed for Fremont, California on April 15 to observe a lunar grazing event, little did he know…
First Mirror Cast for the Giant Magellan Telescope
Workers at the University of Arizona Steward Observatory Mirror Lab have cast the first mirror for the Giant Magellan Telescope.…
Bright Mars This Weekend
Look east this weekend and you'll see a bright red star blazing in the night sky. That's not a star,…
Some Parts Need More Protecting from Radiation
One of the hazards of human spaceflight is the radiation damage of solar storms and cosmic rays. But it turns…
Launcher Caused Cryosat Failure
A preliminary investigation by the Russian Failure Investigation State Commission has determined that a flight control system in the Rockot's…
When Did the Earth’s Core Separate from its Shell?
Geologists have come up with two measurements of radioactive decay to calculate when the Earth's core separated from its crust,…
Student-Built Satellite Launches
A Russian Kosmos 3M launcher blasted off from the Plesetsk Cosmodrome this morning carrying a satellite designed and built by…
Prometheus’ Ripples in the Rings
This image is a mosaic of 15 photographs of Saturn's rings taken by Cassini. The strange ripples are caused by…
Binocular Telescope Sees First Light
The massive Large Binocular Telescope, mounted atop Mount Graham in Arizona achieved a major milestone on October 12 with its…
No Winner at the Elevator Competition
Eleven teams competed in two competitions over the weekend to test technologies for space elevators: beam-powered climbers and new ribbon…