Articles

A.J.S. Rayl

As winter began to retreat in the southern hemisphere of the Red Planet, Opportunity was commanded to finish up her science assignments in April in preparation for leaving its refuge, and the Mars Exploration Rover mission rolled through its 100th month of exploration.

Marc Rayman

Marc Rayman's monthly check-in with the Dawn mission describes the achievements of the spacecraft in its Low-Altitude Mapping Orbit (including near-global high-resolution imaging!) and explains what's next.

Emily Lakdawalla

A lively discussion and debate between planetary polymaths Ralph Lorenz and Jeffrey Moore about Titan, hosted by the Denver Museum of Nature and Science, moderated by David Grinspoon.

Jason Davis

Last week, India launched RISAT 1, a new Earth-observing satellite. How does its synthetic aperture radar compare to that of Envisat, which has fallen silent?

Emily Lakdawalla

An update primarily to reassure readers that yes, we will have A. J. S. Rayl's MER updates back; the May 1 one will be a bit delayed but is coming soon.

Emily Lakdawalla

Welcome to my monthly roundup of the activities of our intrepid robotic emissaries across the solar system! I count 16 spacecraft that are actively performing 13 scientific missions at Mercury, Venus, the Moon, Mars, Vesta, Saturn, and at the edge of the heliosphere. This month's highlight: Cassini's about to fly close past Enceladus and Dione.

Jodie Utter

A paper conservator at an art museum explains how scientific analysis of artworks using different parts of the electromagnetic spectrum is informing understanding of how the artists worked, and how the appearance of their pantings has changed with time.

Emily Lakdawalla

In a channel near a pedestal crater on the plains of Cerberus Palus, Mars, there are wacky swirl patterns.

Emily Lakdawalla

Welcome to the Planetary Society's new website! What you're looking at right now is the result of months of continuous effort by the very small Web team here at the Society. Our goal was to create a new home for the Planetary Society on the Internet that reflects the way things have changed since our last redesign: changes in the Planetary Society, changes in space exploration, and changes in the way the Internet functions.

Bruce Betts

Do planets circle our closest stellar neighbors, the system loved by science fiction: Alpha Centauri? We don’t know. But, Debra Fischer, Julien Spronck, and their colleagues at Yale University, in part with Planetary Society support, are trying to find out.

Bill Nye

As someone living on Earth here at the start of the 21st Century, you and I are able to communicate with more people than any humans before us, ever– since the beginning of time. So, welcome planetary surfers from all over our world. Our new site makes it easier for you and me to be in touch, and especially for you to be in touch with our growing community of space enthusiasts, buddies, colleagues, new acquaintances, and button-wearing Space Geeks®.

Emily Lakdawalla

I'm not sure what to make of this YouTube cartoon about Voyager, except to say that it's simultaneously heart-wrenching, funny, and adorable.

Emily Lakdawalla

I enthused about these Helene images the first time they came down from Cassini, and then forgot about them, and then was thrilled anew a couple of weeks ago when Daniel Macháček posted his version, processed from data published by the Cassini imaging team on April 1.

Bruce Betts

With the latest piece of the puzzle just published in a scientific journal, a solar system mystery that has perplexed people for more than 20 years has been solved, truly thanks to the support of Planetary Society members.

Emily Lakdawalla

I made myself a cheat sheet to many of Vesta's distinctive-looking craters, and also wrote down a list of the major dates in the timeline of Dawn's exploration of Vesta.

Emily Lakdawalla

The Twitterverse is buzzing this morning with news that the Science Programme Committee of the European Space Agency has recommended that the next large European mission be JUICE, a mission to explore the three icy Galilean satellites and eventually to orbit Ganymede.

Mat Kaplan

Planetary Radio for April 16, 2012 features an interview with Scott Kardel of the International Dark Sky Association.

Emily Lakdawalla

Cassini flew past both Enceladus and Tethys on April 14. Here's a cool animation of its approach to Enceladus' plumes, and a pretty global picture of Tethys.

Emily Lakdawalla

The MESSENGER mission just issued a press release announcing that they have completed the first step in the two-step process of lowering the spacecraft's orbit around Mercury.

Jason Davis

SpaceX and NASA have completed a successful flight readiness review (FRR) for the Dragon's upcoming visit to the International Space Station.