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NASA Selects Four Possible Missions to Study the Secrets of the Solar System

4 days ago

NASA has selected four Discovery Program investigations to develop concept studies for new missions. Although they’re not official…
Image credit: NASA
Moon Shadow

September 29, 2019

Jupiter’s volcanically active moon Io casts its shadow on the planet in this dramatic image from NASA’s Juno spacecraft. As with solar…
Io’s Largest Volcano, Loki, Erupts Every 500 Days. Any Day Now, It will Erupt Again.

September 19, 2019

Jupiter’s moon Io is in stark contrast to the other three Galilean moons. While Callisto, Ganymede, and Europa…
Travel to Alien Moons with Expert Guides

July 24, 2019

Humans first explored the Earth’s moon 50 years ago, an impressive feat for sure. But if you are…
Juno Saw One of Io’s Volcanoes Erupting During its Recent Flyby

January 4, 2019

Thanks to a mission extension, NASA’s Juno probe continues to orbit Jupiter, being only the second spacecraft in…
Io Rising

November 18, 2018

Jupiter’s moon Io rises just off the horizon of the gas giant planet in this image from NASA’s…
NASA’s Juno Mission Spots Another Possible Volcano on Jupiter’s Moon Io

July 18, 2018

When the Juno spacecraft arrived in orbit around Jupiter in 2016, it became the second spacecraft in history…
NASA Juno Data Indicate Another Possible Volcano on Jupiter Moon Io

July 14, 2018

Data collected by NASA’s Juno spacecraft using its Jovian InfraRed Auroral Mapper (JIRAM) instrument point to a new…
Io Afire With Volcanoes Under Juno’s Gaze

April 11, 2018

Volcanic activity on Io was discovered by Voyager 1 imaging scientist Linda Morabito. She spotted a little bump…
Juno Observes Jupiter, Io and Europa

October 9, 2017

This color-enhanced image of Jupiter and two of its largest moons – Io and Europa – was captured…
UVA-built instrument plays key role in maping of lava lake on Jupiter moon

May 30, 2017

Taking advantage of a rare orbital alignment between two of Jupiter’s moons, Io and Europa, researchers used an…
Waves of lava seen in Io’s largest volcanic crater

May 11, 2017

Taking advantage of a rare orbital alignment between two of Jupiter’s moons, Io and Europa, researchers have obtained…
Long-term, hi-res tracking of eruptions on Jupiter’s moon Io

October 22, 2016

Jupiter’s moon Io continues to be the most volcanically active body in the solar system, as documented by…
New Research Reveals Fluctuating Atmosphere of Jupiter’s Volcanic Moon

August 3, 2016

Jupiter’s volcanic moon Io has a thin atmosphere that collapses in the shadow of Jupiter, condensing as ice,…
Squeezing out mountains, mathematically, on Jupiter’s moon Io

May 18, 2016

Mountains aren’t the first thing that hit you when you look at images of Jupiter’s innermost moon, Io.…
Jupiter’s Volcanic Moon Io

October 22, 2015

Exploring the Solar System is like peeling an onion. With every layer removed, one finds fresh mysteries to…
What are the Galilean Moons?

June 12, 2015

It’s no accident that Jupiter shares its name with the king of the gods. In addition to being…
Giant Telescope Takes Close Look at Jupiter’s Moon

May 4, 2015

With the first detailed observations through imaging interferometry of a lava lake on a moon of Jupiter, the…
March of the moons: Hubble captures rare triple moon transit of Jupiter

February 6, 2015

These new NASA/ESA Hubble Space Telescope images capture a rare occurrence as three of Jupiter’s largest moons parading…
Hubble Captures Rare Triple-Moon Conjunction

February 6, 2015

Firing off a string of action snapshots like a sports photographer at a NASCAR race, NASA’s Hubble Space…
Rare Triple Transit! There’ll be 3 Moon Shadows on Jupiter on January 24th, 2015

January 21, 2015

Play the skywatching game long enough, and anything can happen. Well, nearly anything. One of the more unique…
A Hellacious Two Weeks on Jupiter’s Moon Io

August 5, 2014

Three massive volcanic eruptions occurred on Jupiter’s moon Io within a two-week period in August of last year.…
Extreme Volcanism: Image Captures one of the Brightest Volcanoes Ever Seen in the Solar System

August 5, 2014

During the middle of 2013, Jupiter’s moon Io came alive with volcanism. Now, an image from the Gemini…
Observing Alert: Rare Triple Transit Of Jupiter’s Moons Happens Friday Night (Oct. 11-12)

October 9, 2013

Talk about a great fall lineup. Three of Jupiter’s four brightest moons plan a rare show for telescopic…
New Molecules Detected in Io’s Atmosphere

September 19, 2013

Io – Jupiter’s innermost Galilean moon – is the most geologically active body in the Solar System. With…
Major Volcanic Eruption Seen on Jupiter’s Moon Io

August 26, 2013

Recent observations of Jupiter’s moon Io has revealed a massive volcanic eruption taking place 628,300,000 km (390,400,000 miles)…
Io’s Volcanoes are in the Wrong Place

April 5, 2013

Jupiter’s moon Io features at least 400 active volcanoes, making it the most volcanically active world in our…
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