Ganymede, Jupiter's largest moon, is also the solar system's largest satellite, even larger than the planet Mercury. It is ...

A new study has redefined gas giant Jupiter’s dimensions. The study found that the planet is about 5 miles (8 kilometers) narrower at its equator and 15 miles (24 kilometers) flatter from pole to pole ...

As NASA's Juno flew around Jupiter last week, the spacecraft snapped a photo of an object before it could make a clean getaway. That clunky, bumpy thing at the far right edge of the frame is Thebe, ...

NASA's Juno spacecraft has snuck a peek at one of Jupiter's largest inner moons. During a close flyby, the spacecraft got a look at Jupiter's moon Thebe from just 3,100 miles (5,000 kilometers) away.

NASA’s Juno spacecraft has captured an extraordinary image of Thebe, the second-largest of Jupiter’s inner moons, providing new insights into the planet’s distant ring system. This close flyby, which ...

NASA's Juno spacecraft captured this view of Thebe, the second largest of Jupiter's inner moons, during a close pass on May 1, 2026. The spacecraft's Stellar Reference Unit (SRU) captured this image ...

Earlier this month, NASA’s Artemis II mission sent four astronauts to orbit the moon and used new laser communications systems to beam dramatic images back to Earth. One of the receivers, though, wasn ...

After nearly half a century in space, the Voyager 1 spacecraft just shut down one of its last remaining science instruments in a desperate attempt to preserve power. NASA's decision to turn off the ...

Pursuing use of nuclear propulsion in space has been a NASA aim for many years—indeed, going back to the 1960s. NASA got through the Artemis II mission last week with a few minor “anomalies,” as NASA ...