Articles

Bill Dunford

Nothing reflects the romance of deep space exploration more than the evocative names of places on the planets and moons.

Mat Kaplan

A live conversation about just a few of the powerful new instruments that will revolutionize our knowledge of the cosmos once again.

A.J.S. Rayl

Mars Exploration Rover Opportunity left Cape York on May 14th and embarked on a 2-kilometer journey south along the western rim of Endeavour Crater. The rover is heading now to Solander Point, where it will spend the coming Martian winter.

Emily Lakdawalla

A girl named Hope Johnson performing an homage to Tom Lehrer's

Larry Crumpler

Opportunity finally started driving south from its location on the outcrop where it had been since solar conjunction.

Emily Lakdawalla

Alex Karl

Partnering with our friends from The Planetary Society, the Space Generation Advisory Council (SGAC), whose members hail from all over the globe, is bringing you an update on our activities and something you can join in on—at least if you are a student or young professional aged 18–35.

Emily Lakdawalla

For most of April, while Mars scuttled behind the Sun as seen from Earth, both Mars rovers were pretty inactive. Now that conjunction has ended, both are doing what rovers should be doing: roving and exploring. As of sol 3312 Opportunity had moved more than 300 meters southward toward Solander Point, while on her sol 279 Curiosity drilled at a second site, Cumberland.

Bill Dunford

Mars gives up its secrets through the unseen colors of its rocks.

Alan Stern

Back in 2005 and 2006, when Pluto’s second and third moons (Nix and Hydra) were discovered, searches by astronomers for still more moons didn’t reveal any. So the accidental discovery of Pluto’s fourth moon by the Hubble Space Telescope in mid-2011 raised the possibility that the hazards in the Pluto system might be greater than previously anticipated.

Larry Crumpler

Opportunity has finally completed the detailed survey of the outcrops on the Cape York segment of the rim of the 22-km diameter Endeavour crater.

Emily Lakdawalla

A look at an older paper describing Galileo's possible sighting of individual ring particles orbiting Jupiter as companions to its inner moon Amalthea.

Van Kane

An exciting new option to enhance NASA's OSIRIS-REx asteroid mission has been proposed by Steve Chesley at JPL. The ISIS spacecraft would impact asteroid Bennu to expose its interior structure to OSIRIS-REx.

Emily Lakdawalla

I've been out of town for a couple of days and am overwhelmed with work and an overflowing email box. So what do I do about that? I ignore what I'm supposed to be doing and play with Cassini raw image data, of course. Here is a

Sarah Hörst

A tale from the scientific trenches: laboratory work to simulate Titan's rich atmosphere.

Bill Dunford

They look so similar they can be hard to tell apart, but each hides its own mysteries.

Mat Kaplan

Planetary Radio for the week of May 6 visits the Planetary Defense Conference one last time to join a

Emily Lakdawalla

Just messing around with a recently released processed version of the Deep Impact Hartley 2 data set.

Emily Lakdawalla

New Horizons might see a Pluto with a northern polar cap, a southern polar cap, or both caps, according to work by Leslie Young.

Emily Lakdawalla

Note the special time! In this week's Planetary Society hangout at 5pm PDT / midnight UTC, I'll talk with MESSENGER deputy principal investigator Larry Nittler about what MESSENGER has accomplished in its prime and extended missions at Mercury, and what it stands to do if awarded a mission extension.