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Blog Archive


New Findings are Conclusive: Europa is crying out for exploration
What are we waiting for?

Posted by Casey Dreier on 2016/09/26 01:36 CDT | 19 comments

New scientific findings add to the evidence that Europa is spouting its liquid ocean into space. NASA has a mission to Europa in the works, but it wouldn't launch for at least a decade. Congress can make it faster, but it all depends on whether they can pass a budget this year.

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Juno and Marble Movie update at Apojove 1

Posted by Emily Lakdawalla on 2016/09/22 12:51 CDT | 4 comments

Juno is on its second of two long orbits around Jupiter, reaching apojove (its farthest distance from the planet) today.

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Juno's instruments return riches from first perijove

Posted by Emily Lakdawalla on 2016/09/02 02:30 CDT | 3 comments

On August 27, Juno soared across Jupiter's cloud tops from pole to pole, with all instruments operating. NASA posted some terrific first results from several of the instruments today. And the JunoCam team released all 28 raw images taken during the close encounter.

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Will Juno’s Instruments Observe the Moons of Jupiter?

Posted by Candice Hansen on 2016/08/30 10:38 CDT | 2 comments

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.

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Juno has arrived!

Posted by Emily Lakdawalla on 2016/07/05 01:14 CDT | 7 comments

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

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A peek at the JunoCam approach movie

Posted by Emily Lakdawalla on 2016/07/04 09:36 CDT | 2 comments

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.

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New work with 35-year-old data: Voyagers at Ganymede and Saturn

Posted by Emily Lakdawalla on 2016/05/25 04:44 CDT | 8 comments

The Voyager data set is a gift to Earth that keeps on giving. This week, I've seen three great new images processed from this old data set.

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LPSC 2016: Icy Satellite Science

Posted by Jessica Noviello on 2016/04/05 08:01 CDT

This year’s Lunar and Planetary Science Conference devoted two oral presentation sessions to questions related to icy satellites in our solar system. Jessica Noviello reports back from the conference.

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Europa Budget Bulge

Posted by Van Kane on 2016/01/25 07:04 CST

Van Kane explains how the key development for NASA’s mission to Europa will be an agreement on how the agency plans to accommodate the monetary bulge that will come from funding the mission.

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Capturing the Rhythm of Space: Insights from 47th DPS Meeting

Posted by Deepak Dhingra on 2016/01/07 06:33 CST

The Division of Planetary Science (DPS) Meeting saw many exciting scientific discussions spanning the range of processes on different planetary bodies, as well as their replication in the laboratory and in models.

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A Lander for NASA’s Europa Mission

Posted by Van Kane on 2016/01/05 07:03 CST | 9 comments

While there’s at least eight years until it launches, this has been a pivotal year for developing NASA’s Europa mission.

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New Concepts to Explore the Jovian System

Posted by Van Kane on 2015/10/28 08:04 CDT | 2 comments

Last year, NASA’s managers invited the European Space Agency to propose a small spacecraft to explore the Jovian system. Van Kane describes the recently-posted results of ESA's concept studies for two possible missions.

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Galileo's best pictures of Jupiter's ringmoons

Posted by Emily Lakdawalla on 2015/08/24 07:07 CDT | 4 comments

People often ask me to produce one of my scale-comparison montages featuring the small moons of the outer solar system. I'd love to do that, but Galileo's best images of Jupiter's ringmoons lack detail compared to Cassini's images from Saturn.

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The not-planets

Posted by Emily Lakdawalla on 2015/07/14 12:48 CDT | 37 comments

Now that I have a reasonable-resolution global color view of Pluto, I can drop it into one of my trademark scale image montages, to show you how it fits in with the rest of the similar-sized worlds in the solar system: the major moons and the biggest asteroids.

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New Horizons is a Triumph for Space Advocates
And Europa will be the same

Posted by Casey Dreier on 2015/07/07 03:40 CDT | 5 comments

New Horizons—what will be NASA’s greatest success of 2015—was cancelled multiple times in its early life, and many times before that in its previous incarnations. A mission to Pluto was not inevitable, despite the overwhelming scientific and public excitement.

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NASA Goes First Class for Europa

Posted by Van Kane on 2015/06/10 12:07 CDT | 9 comments

Over the last several years, engineers at the Jet Propulsion Laboratory and Applied Physics Laboratory have rethought the entire approach to exploring Europa. NASA now has a concept that's affordable.

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Why We Don't Know When the Europa Mission Will Launch

Posted by Casey Dreier on 2015/05/27 01:32 CDT | 12 comments

NASA has been vague about when the new mission to Europa will launch. There's a reason for that, and it's not just orbital mechanics.

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Here Are the Science Instruments NASA Will Use to Explore Europa

Posted by Casey Dreier on 2015/05/26 01:01 CDT | 8 comments

NASA just announced the science instruments that will be used to understand the enigmatic ocean moon of Europa. The mission is planned to launch sometime in the early 2020s.

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NASA's Mission to Europa May Get More Interesting Still

Posted by Van Kane on 2015/04/11 04:08 CDT | 7 comments

NASA officials have asked their European counterparts if they would like to propose contributing a small probe to NASA's Europa mission planned for the mid-2020s.

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A moon with atmosphere

Posted by Emily Lakdawalla on 2015/04/08 01:27 CDT | 10 comments

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.

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