Articles

Kate Howells

An introduction to Jupiter's moons Io, Europa, Ganymede, and Callisto.

Andrew Jones

A Callisto impactor, a Uranus flyby, and a dedicated ice giant orbiter could be on China’s planetary exploration horizon.

Jason Davis

The spacecraft will explore Jupiter's moons Europa, Ganymede, and Callisto, all three of which may harbor subsurface oceans.

Jason Davis

Juice is ready to launch on a mission to uncover the secrets of Jupiter's icy moons.

Jason Davis

NASA's chief of exploration mission planning Nujoud Merancy walks us through a picture from the Orion spacecraft.

Rae Paoletta

Ocean worlds are among the best candidates to search for life.

The Downlink

With space missions like JWST and Voyager, decades of development yield decades of discovery.

Andrew Jones

China plans to select one of two Jupiter mission concepts that would launch in 2029 and arrive in 2035.

Ian Regan

Last month marked the 40th anniversary of the historic Voyager 1 encounter with Jupiter in 1979.

Emily Lakdawalla

This week it seems fitting to feature a portrait of the Galilean moons by Galileo.

Harriet Brettle

The Jovian system is a busy place. The Groovy Galilean Satellites session at last week's Lunar and Planetary Science Conference (LPSC) covered analysis of past mission data, testable hypotheses for future missions, and discussion of the use of ground-based data.

Candice Hansen

It is not easy to observe Jupiter’s moons as more than points of light with Juno, because Juno will never get very close to any of the moons, but as its orbit shifts there will be opportunities to collect data on some of the moons.

Emily Lakdawalla

For a second time, NASA has placed a spacecraft into orbit at Jupiter. The spacecraft operated exactly according to plan, and Juno successfully entered orbit today, July 5, 2016, UTC

Emily Lakdawalla

We're now just about 12 hours away from Juno's Jupiter orbit insertion. As anticipation ramps up, NASA has released this sneak peek at JunoCam's approach movie, made of views of Jupiter and its largest moons shot during the final approach, up until about five days ago.

Emily Lakdawalla

What is the solar system moon with the densest atmosphere? Most space fans know that the answer is Titan. A few of you might know that Triton's is the next densest. But what's the third? Fourth? Do any other moons even have atmospheres? In fact, they do; and one such atmosphere has just been discovered.

Van Kane

Europe's JUICE spacecraft will provide us with a detailed regional study of this icy moon of Jupiter.

Emily Lakdawalla

A few presentation slides with pretty pictures, sized to scale, of the large moons of the solar system.

Jim Bell

I'm absolutely floored when I stop to think that our beautiful blue ocean is only one of perhaps a half dozen or more oceans on other worlds in our solar system, and only one of probably millions (or more) oceans on other Earth-like planets in our galaxy. Oceans abound!

Van Kane

The European Space Agency (ESA) announced the list of instruments selected for its JUICE mission to explore the Jovian system for three years starting in the 2030 following a 2022 launch.

Emily Lakdawalla

Not many subjects remain for which it is possible to assemble everything that we know about it in one book. Even for those subjects for which our knowledge is limited, knowledge seems always to be expanding exponentially. This is not true, however, for the Galilean satellites of Jupiter.