Winter constellations shine defiantly in the face of spring as galaxy season and zodiacal light beckon.

Ganymede, Jupiter’s largest moon, produces auroras like Earth’s. New data from Juno reveals surprising details about its magnetic field.

Ganymede's auroras splinter into small, bright patches — structures that mirror features seen in Earth's own auroral displays ...

What time is the new moon sighting tonight? Here's when and what to know about new moon phase today and next full moon of 2026 - the special pink moon ...

In the early morning hours of Tuesday, March 3, a total lunar eclipse will pass over the United States and it will be seen in ...

On March 8, 1979, NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. [‘On This Day in Space’ Video ...

New research suggests that Jupiter’s icy moons may have formed with complex organic molecules already embedded in their building blocks.

The great planetary instability, which saw Jupiter and the other gas giants wander chaotically through the solar system, coincides with the collision that formed Earth's moon. Could the two events be ...

Astronomers have discovered 12 new moons around Jupiter, putting the total count at a record-breaking 92. That's more than any other planet in our solar system. Saturn, the one-time leader, comes in a ...

There may be enough oxygen in the waters of Jupiter's moon Europa to support millions of tons worth of fish, according to a new study. And while nobody is suggesting there might actually be fish on ...