The largest moon in the solar system — Jupiter’s Ganymede — has a unique and inexplicable magnetic field. New research could ...

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

Neptune’s third-largest moon, Nereid, could be an intact survivor from the planet’s original satellite system, upending ...

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 ...

Neptune has a complicated life story, and its moon Nereid might be the only one left standing from the planet’s multibillion-year history.

Using data from the Webb space telescope, a team of researchers is suggesting that Neptune’s moon Nereid is the only survivor ...

Neptune’s far-flung moon Nereid may be the last of the planet’s original companions that managed to survive a cosmic crash, ...

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

The early solar system may have been far more chaotic than we ever imagined. A new study published in Icarus suggests that ...

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

The moon has fascinated humans for millennia. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The moon is Earth's most constant companion and the ...

Summer arrives this month and with it come long, sweltering days along with all-too-brief nights. But if you can dodge the fireflies and stock up on mosquito repellent, there’s still stargazing to be ...