Articles

David Crisp

Dr. David Crisp explains how NASA's Orbiting Carbon Observatory (OCO-2) works, and what its first light spectra tells his team about the spacecraft’s performance.

Jason Davis

Emily Lakdawalla

Now that we have reasonable confidence that our Mars orbiters will be safe from the close passage of comet Siding Spring, we are free to be excited about the opportunity that the encounter represents. At a community workshop on August 11, representatives from Mars missions shared their plans for great comet science.

Jason Perry

Jason Perry brings us a report on recent ground-based observations that shed new light on the most powerful of Io’s volcanic eruptions.

Jason Davis

LightSail-A's radio system has been fixed, and the spacecraft is now preparing for its August 20 day-in-the-life test.

Van Kane

Van Kane gives us a tour of the instruments selected for the Mars 2020 rover.

A.J.S. Rayl

It's official: Opportunity has traveled farther and lived longer than any other vehicle on another planet, driving to a place in history with an out-of-this-world distinction no one even imagined when the robot field geologist left Earth 11 years ago.

Emily Lakdawalla

What's that in the distance? A binary star? Those are two little round worlds dancing in circles, whirling around a point in space located between the two of them. It's Pluto and Charon, clearly separated by New Horizons' camera.

Karl Battams

On October 19, 2014, Comet Siding Spring is going to have an extremely close encounter with the planet Mars. The bottom line: it seems most likely that our Martian spacecraft will be absolutely fine.

Jason Davis

Watch a recap of The Planetary Society's live LightSail Launch Announcement, which took place July 9 at the KPCC Crawford Family Forum.

Emily Lakdawalla

After a journey of more than a decade, Rosetta has finally arrived at comet 67P Churyumov-Gerasimenko. Confirmation of the successful rocket firing came at about 9:30 UTC via a webcast from ESA's Operations Centre in Darmstadt, Germany.

Jennifer Vaughn

The Planetary Society congratulates the European Space Agency on its Rosetta spacecraft arriving at comet 67P/Churyumov-Gerasimenko. Rosetta is the first spacecraft to orbit a comet.

Stuart Atkinson

Stuart Atkinson muses on the difference between the Europe of today and the Europe of a century ago in the context of Rosetta's momentous arrival at comet Churyumov-Gerasimenko.

Daniel Fischer

Beaming scientists all around, spectacular images on large TV screens, and the best - or at least most exciting - yet to come: such was the extraordinary scene at the European Space Operations Centre in Darmstadt, Germany, today as the European Space Agency's Rosetta spacecraft reached its cometary destination.

Emily Lakdawalla

In less than a day, Rosetta will officially arrive, becoming the first spacecraft ever to orbit a comet! Watch an ESA Livestream of the arrival, and check out the latest photos.

Emily Lakdawalla

On Wednesday's

Jason Davis

A new video shows what a traveler aboard Mercury's MESSENGER spacecraft would see as they zipped over the planet's north polar region.

Emily Lakdawalla

It's just two days now until Rosetta arrives in its initial 100-kilometer

Donna Stevens

Summer’s edition of The Planetary Report is on its way to your mailbox!

Larry Crumpler

Larry Crumpler updates us on the Opportunity rover, which now holds the distance record for a rover on another planet and is about to climb up its highest crater rim segment yet.