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Stories, updates, insights, and original analysis from The Planetary Society.

Two Mars Missions Are Gutted Despite Near-Record Funding for Planetary Science

A new budget submission from the White House would continue record-high funding for planetary science, but proposes deep cuts to 2 productive Mars missions and defers funding for deep space telescope dedicated to finding hazardous near-Earth objects.

Walking on Mars: Bringing the Red Planet Down to Earth

What happens when you print a map of Mars the size of a basketball court?

What's up in the solar system, October 2016 edition: ExoMars arrives!

ExoMars Trace Gas Orbiter arrives on October 19, and it will deliver the Schiaparelli lander to its brief life on the Martian surface. Juno's headed into its science orbit, MOM has released science data, and New Horizons will finally finish downlinking Pluto flyby data.

A new angle on Mars for Mars Odyssey

Mars Odyssey has been in space for 15 years. It flies in a special

What's up in solar system exploration: February 2016 edition

What's going on with our robotic planetary missions? In February I count more than 20 planetary spacecraft exploring six targets beyond Earth or cruising to new destinations.

Seven Mars spacecraft attempted observations of comet Siding Spring. How did they go?

It's been two weeks since comet Siding Spring passed close by Mars, and six of the seven Mars spacecraft have now checked in with quick looks at their images of the encounter. I round up all the results.

Status update: All Mars missions fine after Siding Spring flyby

All seven Mars spacecraft are doing perfectly fine after comet Siding Spring's close encounter with Mars.

Curiosity Rover Science Plan Slammed by NASA Review Panel

Senior review recommends continuing all major planetary exploration missions, but not without some changes.

Mars orbiters plan for their October encounter with comet Siding Spring

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.

What's up in planetary missions in 2014

With the New Year upon us, what can we look forward to in 2014? For me, the main event of 2014 is that ESA's Rosetta mission finally -- finally! -- catches up to the comet it has been chasing for a decade. We will lose LADEE, gain two Mars orbiters, and launch Hayabusa2. The year begins with an amazing 24 spacecraft exploring or cruising toward various planetary destinations.

Noachian, Hesperian, and Amazonian, oh my! --Mars' Geologic Time Scale

The Martian Geologic Time Scale is a lot more complicated than the Moon's.

An Ongoing Odyssey

Twelve years on, Mars Odyssey just keeps sending great images.

Ice Cap to Ice Cap with Mars Odyssey

Explore the mysterious Martian landscape with the workhorse of the Solar System, Mars Odyssey.

What's up in the Solar System in August 2012

Welcome to the monthly roundup of our solar system's envoy of electronic explorers! All eyes are on Curiosity as it approaches Mars this weekend. Who will lend support at the Red Planet?

What's Up in the Solar System in July 2012

Welcome to my monthly roundup of the activities of our intrepid robotic emissaries across the solar system! Curiosity is about to land; Opportunity has rolled through sol 3000; Odyssey is back online, having switched to a spare reaction wheel; Dawn is now in High-Altitude Mapping Orbit 2; and Cassini is taking advantage of its newly inclined orbit to get spectacular series of images of Saturn's rings.

Curiosity's shrinking landing ellipse

There was good news and bad news in this morning's press briefing about Curiosity rover's upcoming landing on Mars, just eight weeks from now. First, the good news: the landing ellipse has shrunk. The bad news: there's a contamination problem with the drill, and the Odyssey orbiter is in safe mode.

Mars Exploration Family Portrait

Jason Davis put together this neat summary of the checkered history of Mars exploration.

365 Days of Astronomy Podcast: What's up in the second quarter of 2011

Regular readers of this blog will find the content of today's 365 Days of Astronomy Podcast familiar, because it's an update on what the solar system exploration spacecraft are up to, based on my monthly

What's up in the solar system in April 2011

April 2011 will see MESSENGER begin the science phase of its orbital mission at Mercury, and should, I think, also see the start of Dawn's approach observations of Vesta. At Mars, Opportunity is back on the road again, rolling inexorably toward Endeavour. At Saturn, Cassini will continue its focus on Saturn and Titan science.

What's up in the solar system in March 2011

I don't think there's any question what the big event of this month will be: MESSENGER is finally, finally entering orbit at Mercury on March 18 at 00:45 UTC (March 17 at 16:45 for me).

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