Articles

Emily Lakdawalla

With a series of drives over the last week, Curiosity is now approaching her next science stop at Kimberley. The distinctive knobs of the Kimberley outcrop are visible in photos taken on sol 569.

ESA Mars Express Team

In the quest to track Comet Siding Spring, the Mars Express team tells us how computing the orbit of a comet isn't as straightforward as science fiction would have us believe.

Casey Dreier

Europa may get a mission...eventually. We give our first take on the 2015 NASA Budget request. How does Planetary Exploration fare? Which projects were cancelled? Will NASA capture an asteroid? And most importantly, what can you do about it?

Emily Lakdawalla

In a series of drives, Curiosity flew past the

ESA Mars Express Team

Today's update from the Mars Express team contains the realisation that, for some of the risks associated with October's Siding Spring flyby, there may not be much the team can do.

A.J.S. Rayl

The Mars Exploration Rover mission put its 10th anniversary in the rear view mirror in February and roved on into its 11th year of surface operations at Endeavour Crater.

Emily Lakdawalla

The United States Geological Survey recently issued an improved version of the Viking color map of Mars. This 40-year-old data set still provides the prettiest global-scale map of the planet.

ESA Mars Express Team

Here's the next installment in the continuing story of how the Mars Express team is preparing for Comet Siding Spring flyby, 19 October 2014. This week: introducing the spacecraft's subsystems and structure – and wondering how we can absorb impacts.

ESA Mars Express Team

Today's post continues where we started last week with an update from the Mars Express Flight Control Team at ESOC on their preparations for the 19 October Comet Siding Springs flyby. Today: defining the challenge!

Emily Lakdawalla

Check out this unusual crater on Mars. It's not a very big one, less than 500 meters in diameter, and yet it has two rings. Most craters on Mars this size are simple bowl shapes. What's going on here?

ESA Mars Express Team

On Sunday, 19 October 2014, at around 18:30 UTC, comet C/2013 A1 – known widely as 'Siding Spring' after the Australian observatory where it was discovered in January 2013 – will make a close fly-by of Mars.

Larry Crumpler

Opportunity arrived at the location that has been the target of all this climbing since late last (Earth) summer. We will settle in for some detailed work on the outcrop here since this appears to be something different from the impact breccias that we have been seeing along the ridge crest.

Larry Crumpler

Today is the tenth anniversary of Opportunity's landing on Mars. Here at the New Mexico Museum of Natural History and Science, we just opened a tenth anniversary exhibit.

Larry Crumpler

Opportunity is still exploring an outcrop high up on Murray Ridge as the winter solstice on Mars approaches. At this location the tilts are good, so Opportunity is getting excellent solar input on its solar panels.

Bill Dunford

Animated maps of the planets show the spheres in motion.

Lori Fenton

I have a pet peeve: the words dune and ripple are often used interchangeably, although they are quite distinct from one another. So what’s the difference between aeolian dunes and ripples? And why should anybody care?

Emily Lakdawalla

Curiosity has tested a new driving mode -- backwards -- and achieved their longest single-day drive in three months. And they've committed to driving to the spot formerly known as

Emily Lakdawalla

After more than two months of very slow driving due to concern about the wheels and time spent choosing whether to enter

Emily Lakdawalla

A hundred days after launch, India's Mars Orbiter Mission is doing just fine, and so is NASA's MAVEN.

Bill Dunford

Exploring a set of newly named hills on Mars reveals tantalizing clues to the planet's story.