The successful mission of Apollo 11 opens an epoch of manned lunar exploration. What questions should this exploration seek ...

NASA wants to send humans back to the moon, but one hurdle standing in its way is how to provide power; these fuel cells ...

Our solar system has two ice giants, Uranus and Neptune, but there may have been a third. According to a new study published ...

Ganymede may generate its magnetic field through a core that is still forming today, challenging long-held ideas about ...

The petite village of Gonten sits at nearly 3,000 feet above sea level in Appenzell, Switzerland’s smallest canton, about an hour east of Zurich. Its 1,400 residents still lead flower-crowned cows ...

Editor's note: This article was updated March 25 at 11:40 a.m. ET to account for the recent discovery of new moons around Saturn and Jupiter. The total number of planetary moons and small-body ...

Saturn’s bright rings are one of the most recognizable sights in the Solar System. Yet new analyses of data from NASA’s ...

Meanwhile, Wall Street’s three major indices finished mixed, with the Dow Jones the sole loser, down 0.23 percent.

A new study suggests Ganymede—our neighborhood's biggest moon—still has a hot, churning core cranking out its unique magnetic ...

A trio of planets stand in line in the evening sky after sunset: Jupiter, Venus, and Mercury, all visible in the twilit sky.

Jupiter’s Ganymede — has a unique and inexplicable magnetic field. New research could finally explain it: the moon is heating ...

Engineers are increasingly turning to the concept of "biomimicry" for the next generation of Mars robots. When you purchase ...