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

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

The moon glows with the Beehive Cluster on May 21, as a trio of planets form up in the evening sky.

This goes against the previous theory, which has long suggested that Nereid is actually an object captured from the Kuiper ...

Looking for a sky event this week? Check out our full Sky This Week column. May 21: Check in on Saturn and Mars Tonight we're ...

A study suggests that the ice giant's largest moon, Triton, made a dramatic entrance to the Neptunian system long ago, kicking Nereid outward and destroying the planet's other original lunar companion ...

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

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

A material recently discovered and tested at NASA's Glenn Research Center in Cleveland could help astronauts pack lighter for future missions to the moon. NASA is researching ways explorers could ...