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Jupiter

Jupiter and her volcanic moon, Io (Image: NASA/JHU/APL)

A series of three massive volcanic eruptions detected on the surface of Jupiter's moon Io in August last year, has the potential to yield insights into the formation process of the surface of Earth-like planets. By any standards, these eruptions were enormous, characterized as titanic curtains of lava issuing forth from fissures several miles in length, that spewed massive amounts of material high above the moon's surface.  Read More

Jupiter's Great Red Spot has been a source of inspiration and curiosity for generations of...

Data collected by NASA's Hubble Space Telescope over the past 20 years show Jupiter's Great Red Spot has been shrinking at an increasing rate to its current, and smallest, recorded size. The reduction is possibly due to the existence of eddies, that have been observed feeding into the planet-sized storm.  Read More

JPL scientists say Ganymede may be built like a club sandwich

In a combination of the astronomical and the culinary, scientists at NASA’s Jet Propulsion Laboratory (JPL) say that Jupiter’s largest moon, Ganymede, may not have a single large ocean, but instead may be built like a club sandwich with alternating layers of ice and water. The claim is based on computer models of how salt water acts under the high pressures that may exist beneath Ganymede’s global ice pack, and may improve the chances of finding life elsewhere in the Solar System.  Read More

The image is a mosaic of the best shots from various missions (Image: USGS Astrogeology Sc...

NASA scientists have produced the first global geological map of Jupiter's largest moon Ganymede by combining images from over twenty years of observation by the Voyager spacecraft and the Galileo orbiter.  Read More

Artist's concept of the Juno flyby (Image: NASA)

If you want to have a starship captain’s view of flying past the Earth, then NASA is happy to oblige. This week, the space agency released a video made of images taken by the Juno space probe as it shot past our planet last October. The unmanned spacecraft was using the Earth’s gravity to build up its velocity by over 8,800 mph (14,100 km/h) and slingshot it on its way to Jupiter. And as it did so, it took the time to receive a “Hi” from ham radio operators back home.  Read More

Artist's concept of Juno arriving at Jupiter (Image: NASA/JPL-Caltech)

Online observatory Slooh has streamed live pictures of NASA’s Juno space probe flyby. The feed from the robotic half-meter telescope in the Canary islands gave visitors a ringside seat as the probe passed within 347 mi (559 km) of Earth in a slingshot maneuver designed to take it all the way to Jupiter.  Read More

Artist's impression of the surface of Europa (Image: NASA)

We’re used to expendable boosters on space missions, but what about an expendable crew? That is essentially the long-term plan of Objective Europa, a group led by Kristian von Bengtson, founder of Copenhagen Suborbitals, that's contemplating the challenges of sending astronauts to Jupiter's moon Europa to look for life. The only catch is that the trip is one-way with no hope of return at the end of the mission.  Read More

On Monday, Juno had traveled half the distance to Jupiter (Image: NASA/Caltech)

NASA announced on Monday that its Juno space probe has reached the halfway mark on its voyage to Jupiter after covering a distance of 879 million miles. This seems odd when you consider that Juno will pass just 347 miles (559 km) from Earth in October. Why both of these facts are true is due to the complex orbit that Juno is following in order to reach its destination.  Read More

Artist's concept of JUICE orbiting Jupiter (Image: ESA)

The European Space Agency (ESA) is sending JUICE to Jupiter in 2022. Rather than some kind of interplanetary beverage delivery, JUICE stands for JUpiter ICy moons Explorer (JUICE) and is the first Large-class mission in ESA's Cosmic Vision 2015-2025 program. The spacecraft will carry out the most thorough exploration of Jupiter and its moons since NASA's Galileo mission that ran from 1989 to 2003. The ESA has now announced the eleven scientific instruments selected to for the unmanned probe to carry to the gas giant.  Read More

The Moon and Jupiter as they might appear in a small telescope (Photo: Gregory H. Revara, ...

Owners of small telescopes, rejoice! For that matter, on the night of January 21 everyone else can also enjoy the sight of Jupiter and the Moon at nearly the same position on the celestial sphere. Here's our advice on how best to observe this – the closest approach of the Moon and Jupiter until 2026.  Read More

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