Jupiter Overtakes Saturn as The Planet With The Most Known Moons

Astronomers have counted 12 previously unknown moons in orbit around our Solar System's biggest planet, bringing the known total to 92, and leaving Saturn, with its measly count of 83, in the dust.

Heat wave on Jupiter, from its aurora

Researchers had discovered a “heat wave” extending across 10 Earth-diameters in the atmosphere of our solar system’s biggest planet, Jupiter. In other words, Jupiter’s atmosphere is hundreds of degrees hotter than previously thought.

Jupiter's Moon Europa Has Signs of Liquid Water

Strange double ridges on the surface of Jupiter's ice moon Europa could be signposts to shallow reservoirs of water. 

Europa Could Be Pulling Oxygen Down Below the Ice To Feed Life

Jupiter's moon Europa is a prime candidate in the search for life. The frozen moon has a subsurface ocean and the new research shows that the moon is pulling oxygen down below its icy shell.

First 3D View of Jupiter Atmosphere

New findings from NASA's Juno probe orbiting Jupiter provide a fuller picture of how the planet's distinctive and colorful atmospheric features offer clues about the unseen processes below its clouds.

Something big Just hit Jupiter

The impact on Jupiter was reported by both amateur and professional astronomers. The object’s diameter is estimated at 20 meters and it is believed to be the remnant of a larger comet or asteroid.

Evidence of water vapor at Jupiter's moon Ganymede

For the first time, astronomers have uncovered evidence of water vapor in the atmosphere of Jupiter's moon Ganymede.

Titan's Largest Methane Sea is Over 100 Meters

Kraken Mare, a sea of liquid methane on Saturn's moon Titan, is at least 100-m deep near its center, according to a recent analysis of Cassini's data.

FM radio signal found coming from Jupiter moon

The Juno spacecraft orbiting Jupiter has discovered an FM radio signal coming from the moon Ganymede. The find is a first-time detection from the moon. The signal is of natural origin.

Where were Jupiter and Saturn born?

New work reveals the likely original locations of Saturn and Jupiter. These findings refine our understanding of the Solar System's unusual architecture, including the ejection of an additional planet between Saturn and Uranus.

Direct evidence of volcanic impact on Io's atmosphere

Previous research has shown that Io's atmosphere is dominated by sulfur dioxide gas. Now, astronomers could, for the first time, clearly see the plumes of sulfur dioxide (SO2) and sulfur monoxide (SO) rise up from the volcanoes.

Jupiter Probably Has 600 Small, Irregular Moons

In recent years, the confirmed number of Jovian moons has risen to 79. Now, a new study says that there may be 600 small irregular moons orbiting Jupiter.

Ganymede shows hints of Solar System's largest impact

Researchers have found what may be remnants of the solar system’s largest impact structure, ancient concentric troughs that extend across almost the entire surface of Jupiter’s moon Ganymede.

New images of Europa show 'chaos terrain' in crisp detail

The surface of Jupiter's moon Europa features a widely varied landscape, including ridges, bands, small rounded domes and disrupted spaces that geologists call "chaos terrain."

NASA’s Juno spacecraft sends back new photos of Jupiter

Juno took the photo 8,000 miles from the cloud tops during its 18th close flyby of Jupiter on February 12. Overall, 32 flybys are planned, so Juno is just beginning the second half of its flybys.