Mars Has Methane--But Does It Have Life?
Multiple lines of evidence suggest the gas occasionally surges into the Red Planet’s atmosphere. Could it be a sign of a subsurface biosphere?
Purch
Is NASA's Golden Age of Space Telescopes Ending?
For the second year in a row, the White House is seeking to cancel one of the space agency’s top-priority astrophysics projects, the Wide-Field Infrared Survey Telescope
SpaceX Crew Dragon Splashes Down after Historic Test Flight
Splashdown occurred at 8:45 am Eastern time about 230 miles off the Florida coast
"Mole" on InSight Mars Lander Begins Burrowing, but the Going Is Rough
Small stones have impeded progress on landmark efforts to study the Red Planet’s subsurface activity
How Security Experts Track North Korea's Nuclear Activity
Remote techniques can detect signs of active testing—but they don’t tell us everything
Physicists Solve a 35-Year-Old Mystery Hidden inside Atomic Cores
New research reveals that pairs of protons and neutrons within atomic nuclei influence the speed of quarks passing through
NASA Spots Another Possible Impact Crater Buried Under Greenland Ice
The newfound crater candidate is thought to be unrelated to another that was discovered last year
NASA's Curiosity Rover Weighs a Mountain on Mars
Gravitational measurements may solve the long-standing mystery of how Mount Sharp formed
Scientists Prepare for Mission to Europa
NASA’s Europa Clipper spacecraft could launch as early as 2023 to investigate one of the solar system’s most mysterious moons
Lunar Craters Show Spike in Earth-Pummeling Space Rocks
A new analysis suggests the last few hundred million years of life on Earth has seen above-average asteroid impact rates
