Articles

A.J.S. Rayl

As 2008 fades to the pages of history, Spirit and Opportunity are closing in on the end of their fifth year of exploration on the Red Planet and moving the Mars Exploration Rover mission forward into a new year of bold scientific objectives.

Emily Lakdawalla

A very pretty picture of a moon among stars. Happy 2009, everyone!

Emily Lakdawalla

We're getting close to the fifth anniversary of the landings of Spirit and Opportunity, but was we approach that milestone, we're passing another. I've been told that as of yesterday, Spirit and Opportunity have operated on Mars for a combined length of time that is longer than the combined number of sols that the twin Viking landers operated.

Ryan Anderson

As I post this, NASA is holding a press conference in which they are announcing that the Mars Science Laboratory's launch date will be slipped by two years.

Ryan Anderson

At 12 noon EST. I know what the announcement is, but I'm not allowed to tell you! How frustrating is that?!

Ryan Anderson

Mike Griffin started the press conference, and got right down to business announcing the launch delay and indicating that the actuators as well as other technical problems are responsible.

Marc Rayman

The Dawn spacecraft is healthy and on course for its flyby of Mars early next year. The planet's gravity will help boost the probe on its way to rendezvous with Vesta.

A.J.S. Rayl

The Mars Exploration Rovers are nearing the end of their fifth year of exploring the Red Planet in dramatically different ways.

Ryan Anderson

I just heard, via this article at Universe Today, that the sample cache on MSL has been canceled.

Emily Lakdawalla

The period of Mars solar conjunction has just begun, which means that a host of scientists and engineers whose day jobs entail interaction with the five active Mars spacecraft are getting a five-week break from the daily grind of operations.

Ryan Anderson

I've known about this for a little while but it was finally made public: The list of MSL landing sites had now been trimmed to four.

Emily Lakdawalla

I am greatly relieved to report that Spirit did talk to Earth as ordered today, indicating that the rover's power situation did not get so bad that a

A.J.S. Rayl

After taking a

Emily Lakdawalla

There was a worrying update posted on the JPL website for Spirit today: an early-season dust storm has darkened its skies enough that its solar panels produced only 89 watt-hours of power yesterday, sol 1,725. Neither rover has ever, ever seen power production levels that low, not even during last year's massive dust storm.

Emily Lakdawalla

Another day, another drive: on sols 1,693 and 1,695 the Opportunity rover conducted two more lengthy drives to the south, totaling almost 200 meters. On the other side of the planet, Spirit is FINALLY in motion again.

Marc Rayman

The Dawn spacecraft continues on course and on schedule for its bold campaign to unexplored worlds.

A.J.S. Rayl

Spring is still off a ways on the horizon in the Red Planet's southern hemisphere, but the solar-powered Mars Exploration Rovers seemed to shake off their third Martian winter this month, as they roved into new phases and looked to new destinations on their overland expeditions of Gusev Crater and Meridiani Planum. In the process, Spirit and Opportunity both chalked up notable achievements in October, adding to their already long list of accomplishments accrued as the world's first long-lived roving robot field geologists.

Emily Lakdawalla

When MESSENGER flew past Mercury for a second time on October 6, 2008, its cameras snapped photos of an impressive 30 percent of the planet's surface that had never previously been seen by spacecraft.

Emily Lakdawalla

Victoria crater, the site of a Mars year's worth of study, is now far over the horizon, as Opportunity has lately completed a series of very long drives. Opportunity is once again sailing the sand seas of Meridiani Planum.

Emily Lakdawalla

An article in the September 26 issue of Science neatly explains why only the southern half of Mars is strongly magnetized.