Articles

Emily Lakdawalla

When Casey invited me to participate in last Friday's

Björn Jónsson

This is a very large (19000 pixels square) mosaic of the fjords and glaciers of southern Greenland. I had been interested for a long time in experimenting with the processing of Earth satellite imagery just to get a comparison to the other planets.

Mat Kaplan

On the evening of November 9, which would have been Carl Sagan's 78th birthday, the Planetary Society brought together some of his best friends to share their memories. We were also joined by four young scientists whose career choices were influenced by Carl.

Emily Lakdawalla

Steve Cariddi's Year in Space wall calendar crams an incredible variety of information into a beautiful, large wall calendar that is great for grownups, kids, or classrooms.

Emily Lakdawalla

In a stroke of pure genius, Randall Munroe of the web comic XKCD describes

Mat Kaplan

The Planetary Society has invited a few friends of Carl Sagan's to a celebration of his birth and his legacy. Watch the live webcast featuring physicist Kip Thorne, Contact Executive Producer Lynda Obst and much more!

Emily Lakdawalla

I asked Mars Reconnaissance Orbiter to take a photo, and it turned out better than I had imagined: an incredibly fresh, well-preserved, dramatically rayed oblique impact crater.

Emily Lakdawalla

This week's Cosmoquest Astronomy Hour Google+ Hangout at 1600 PDT / 2300 UTC on Wednesday will feature Pamela Conrad, the deputy principal investigator for Curiosity's Sample Analysis at Mars (SAM) instrument. Tune in to learn more about how this experiment will change our view of Mars, and to ask your questions!

Mat Kaplan

This week's Planetary Radio episode presents highlights of the first Curiosity press briefing about the Martian atmosphere, and then takes you to the opening day ceremony for Shuttle Endeavour. You have till Friday, November 9, at 10am Pacific to send your 10th anniversary message to the show and possibly win Bill Nye on your answering machine.

A.J.S. Rayl

After spending much of October driving around and taking pictures on Matijevic Hill, Opportunity hunkered down for Halloween and spent the holiday quietly, staying out of mischief's way and the Mars Exploration Rovers (MER) mission roved another month closer to its ninth anniversary of working on the surface of the Red Planet.

Emily Lakdawalla

A sharp-eyed amateur noticed two images of Titan taken 20 months apart from nearly exactly the same perspective, and they illustrate how the shifting of Saturn's seasons has brought change to Titan's atmosphere.

Emily Lakdawalla

I'm directing a question at professional and amateur space scientists and educators: could I make slide sets that would help you educate the public about what's going on in planetary exploration?

Emily Lakdawalla

Today I stumbled upon the Lunar and Planetary Institute's Lunar Sample Atlas, and was reminded of how much I love petrographic thin sections. They can make unassuming, cruddy looking rocks beautiful.

Emily Lakdawalla

Curiosity used MAHLI, the scientific camera at the end of the robotic arm, to shoot a huge color portrait of herself sitting on Mars, with Gale's central mountain in the background.

Emily Lakdawalla

Curiosity has already spent more than three weeks at Rocknest, working through the very slow process of commissioning the sample handling systems. While parked, she's taken a couple of amazing photo mosaics.

Marc Rayman

Dawn continues to raise its orbit en route to its 2015 date with Ceres. Also, Marc prepares his high-energy Halloween costume.

Bruce Betts

Learn about the Planetary Society’s newest project: PlanetVac, with Honeybee Robotics, aims to prototype and test in a huge vacuum chamber a new way to sample planetary surfaces that could be used for sample return or for in situ instruments.

Emily Lakdawalla

Today hurricane Sandy is a major threat to life and property across the west coast of the northern Atlantic ocean. I just want to give thanks in advance to all the people who have devoted their careers to making sure that Americans have sufficient warning of devastating, unstoppable weather events like this one.

Emily Lakdawalla

In an annual tradition, I review eight children's story books with planetary and astronomy themes. Favorites include Pieces of Another World by Mara Rockliff and Solar System Forecast by Kelly Kizer Whitt.

Emily Lakdawalla

A few talks at last week's Division for Planetary Sciences meeting discussed observations of a double occultation -- both Pluto and Charon passing in front of the same star.