We Can Now Detect Earthquakes From Space—and Maybe Venusquakes Too
Quakes may offer scientific clues about planets' interiors.
Planets
Nuclear Renaissance in Space
As the U.S. prepares to relaunch domestic production of plutonium-238, the space community wishes to assure the public of its safety. Are they right?
Gas on Mars Silent But Not Deadly
Scientists weigh the possibility that methane gas on Mars comes from microorganisms in the soil.
The Search for Intelligent Light
Planet hunter Geoff Marcy scans the skies for answers to the universal question of other life.