The team still can't confidently rule out the existence of Europa's water vapor, especially as similar plumes have been more ...

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

Ganymede and Europa transit Jupiter tonight, while Io disappears in an occultation. West Coast observers can catch a double ...

A study suggests that the ice giant's largest moon, Triton, made a dramatic entrance to the Neptunian system long ago, ...

Neptune , the farthest of the planets, acts like a shepherd for the outer solar system, gravitationally scattering distant asteroids known as Kuiper ...

Neptune's mysterious, far-flung moon Nereid may be the last of the planet's original companions. Scientists at the California ...

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

Our solar system appears beautifully organized, but its stability is actually the result of an incredibly delicate cosmic ...

Even in the worst areas of light pollution, you can’t miss Venus. After hiding out in the morning sky most of the last half of 2025, it has finally entered the Western evening sky and will continue ...

Proclus’s visionary insights into planetary satellites reveal a divine cosmic order that foreshadowed modern astronomical ...

May’s sky features not one but two full moons as well as the dazzling Eta Aquarids meteor shower. Here’s when to look up for the month’s most striking alignments.

If you have binoculars, you may even spot some of Jupiter’s largest moons as tiny pinpoints beside the planet NICHOLAS KAMM/AFP via Getty A waxing crescent moon and Jupiter will appear close together ...