Articles

Mark Hilverda

A close look at two international planetary science poster presentations from the 2013 AGU Fall Meeting featuring sediment experiments to better understand Martian geomorphology and Juno's plans for exploring Jupiter's ring system.

Leigh Fletcher

2013 has been a rather exciting year for Europa scientists. Today's exciting news: the Hubble Space Telescope discovery of water vapor plumes from the south pole of this icy moon.

Casey Dreier

We've waited long enough, Europa cries out for exploration and discovery. It's time to heed that cry.

Emily Lakdawalla

In which I finally get around to writing about a paper published last August: Enceladus' plumes sometimes spout more and sometimes spout less, depending on where Enceladus is in its orbit. This discovery was enabled by Cassini's longevity at Saturn, and we'll be able to follow up on it, as long as Cassini is allowed to complete its mission.

Casey Dreier

Voyager Chief Scientist Ed Stone was the featured guest on the Colbert Report to celebrate the spacecraft's entry into interstellar space.

Emily Lakdawalla

Here's a lovely new view of Dione, one of the lovely mid-sized icy moons of Saturn, assembled by Daniel Macháček.

Mat Kaplan

This week's PlanRad talks to one of the creators of a new effort to build support for the Europa Clipper, a spacecraft that would tell us far more about what's going on under that icy moon's surface.

Casey Dreier

The Voyager mission may be the ultimate expression of our desire to explore, but why does that will exist in the first place? Why is it unique to humans?

Emily Lakdawalla

It took months of work (and no wonder) but the wait was worth it: here is Cassini's spectacular view of Saturn, captured on July 19, 2013, as Cassini passed through Saturn's shadow. If you're a little confused by the image, I'm here to help: I've posted a video explainer.

Van Kane

NASA’s shrinking budgets for planetary exploration may force it to decide between continued funding for the Saturn Cassini mission and the continued funding for its Mars missions.

Geraint Jones

It’s been a long time since anyone paid Uranus a visit. The Uranus system is, however, fascinating, as evidenced by the wealth of topics covered by the diverse group of planetary scientists who gathered to discuss it last week at the Paris Observatory.

Emily Lakdawalla

I try to be measured in my praise for spacecraft images. Not every photo can be the greatest space image ever. But this enormous mosaic showing the flattened globe of Saturn floating within the complete disk of its rings must surely be counted among the great images of the Cassini mission.

Emily Lakdawalla

After entering safe mode last week during its Earth flyby, Juno returned to normal operations and downlinked all engineering and science instrument data. It entered safe mode again on Sunday night, but it is expected to re-resume normal operations late next week.

Mat Kaplan

Apologies to baseball fans and others for the theme of this week's Planetary Radio preview, which has star player Emily Lakdawalla on deck.

Emily Lakdawalla

Following its Earth flyby earlier today, Juno is in safe mode. This is the protective state a spacecraft goes into when it detects a problem. But everything is okay. For more details, I just spoke with Rick Nybakken, Juno Project Manager at the Jet Propulsion Laboratory.

Emily Lakdawalla

I attended a few talks at the Division for Planetary Sciences meeting today that concerned Titan's origin and interesting surface, and then one in the afternoon about the atmosphere.

Emily Lakdawalla

Juno flies past Earth for a gravity assist at 19:22 UTC today, and the first images from the encounter are already on the ground and processed by amateurs!

Casey Dreier

NASA's Juno spacecraft gets a gravity assist from the Earth on its way to Jupiter today. Learn all about today's close approach.

Mat Kaplan

This week's Planetary Radio features artist Jon Lomberg inviting listeners to join the New Horizons Message Initiative.

David Shortt

With the recent announcement by NASA that the 36 year-old spacecraft Voyager 1 has officially entered interstellar space at a distance from the sun about four times further than Neptune's orbit, and with Voyager 2 not far behind, it seems worthwhile to explore how humans managed to fling objects so far into space.