Mars

NASA spent years and billions of dollars collecting Martian samples to bring home. Now they might be stranded

If you pick the right time, our home world and our moon could be easily visible from the Red Planet

The Perseverance rover’s new findings set the stage for bringing Martian samples back to Earth to test whether microbes once inhabited the Red Planet

A common nasal spray shows promise in reducing COVID risk, but vaccine access remains tangled in policy in the U.S.

With no fuel or engines, tiny explorers will surf sun-warmed air alone to explore high in the skies of Earth and Mars

A new global overview of Mars suggests dust, rather than water, is the source of mysterious streaks there

Launching in 2028, China’s Tianwen-3 Mars sample return mission could bring Red Planet rocks back to Earth as early as 2031—years ahead of competing U.S.-European efforts

The largest, most powerful launch vehicle ever built is meant to be a key part of SpaceX’s plans to send humans to Mars—and NASA’s plans to return astronauts to the moon, too

After billions of dollars in spending and decades of planning, NASA may be forced to abandon precious samples of air, rock and soil on the Martian surface. Experts are furious

An unhinged 2026 U.S. budget proposal would hollow NASA to a husk bent to Elon Musk’s whims. Only one mission can save the space agency

NASA sees two paths for saving its beleaguered plan to retrieve materials from the Red Planet but won’t choose between them until 2026

The world’s richest man, Elon Musk, owes his superstar success to self-satisfied competitors who blew obvious opportunities