Solar system

All the sun’s planets are oddballs. But some are more so than others

After all these years, Dream Chaser—a commercial U.S. space plane—is still chasing the dream of spacecraft that can fly from orbit to airports

The triumph of NASA’s first crewed lunar mission in a half-century is a reminder of what the moon really means for Earth—and why we’re going back

NASA plans to launch a wildly ambitious nuclear-powered octocopter to Saturn’s largest moon, Titan, in 2028

Medieval poets, including a Japanese noble, provided key descriptions to track down solar events

Experts found that the White House budget request for the upcoming fiscal year could defund 54 NASA science missions, including a spacecraft currently studying Jupiter and two planned Venus missions

China is working toward its own moon landing. Could it put astronauts on the moon before NASA’s Artemis program does?

A hidden milestone lurks in the U.S.’s Artemis-focused lunar ambitions—the nation’s first-ever successful robotic moon rover

If NASA’s ambitious lunar exploration plans succeed, scientists will cover the moon with sensors—and find answers to several long-standing questions about the inner solar system

A daring 10-day voyage will take four astronauts on a loop around the moon and set the stage for future forays to the lunar surface

The U.S. space agency’s Skyfall project calls for sending robotic helicopters to Mars on a nuclear-powered spacecraft before the end of Donald Trump’s presidency

A century after Robert Goddard’s first-ever launch of a liquid-fueled rocket, two NASA experts weigh in on what his legacy still holds for spaceflight’s future