Articles

Karl Battams

We're now less than two weeks away from comet C/2012 S1 (ISON) reaching perihelion and, if we’re honest, we are still none the wiser as to how the situation might play out!

Check into the latest Southern California

Emily Lakdawalla

The Jet Propulsion Laboratory announced today that the geologists on both Mars rover teams -- Opportunity and Curiosity -- have named landmarks at their field sites after the late Bruce Murray.

Jasper S. Halekas

ARTEMIS is a mission that retasked two probes from the 5-spacecraft Heliophysics constellation THEMIS to study the interaction of the Moon with the space plasma environment.

Ken Herkenhoff

Having racked up several kilometers in the drive to Mount Sharp, Curiosity paused for a second science stop at an outcrop called

Emily Lakdawalla

It took months of work (and no wonder) but the wait was worth it: here is Cassini's spectacular view of Saturn, captured on July 19, 2013, as Cassini passed through Saturn's shadow. If you're a little confused by the image, I'm here to help: I've posted a video explainer.

Casey Dreier

Episode 5 focuses on Mars, the planet that has stubbornly refused to conform to the wishes of humanity for hundreds of years, from Lowell to Sagan. Grab your cosmo and join our discussion of 'Blues for a Red Planet.'

Van Kane

NASA’s shrinking budgets for planetary exploration may force it to decide between continued funding for the Saturn Cassini mission and the continued funding for its Mars missions.

Bill Dunford

In the face of disaster, the search for answers and ways to help continues, on the ground and in space.

Christophe Pellier

Can features on Neptune be observed by amateur astronomers? For years, the Hubble Space Telescope and some professional terrestrial observatories have been revealing incomplete belts and spots on the surface of Neptune. Now, spots have been imaged by amateurs.

Vitaliy Egorov

On Sunday, the shadow of the Moon passed across Africa and the Atlantic Ocean. This was the last solar eclipse of the year. The Elektro-L satellite was able to observe the eclipse, and we can see the darkness of the lunar shadow covering Africa.

Casey Dreier

Humans face the consequences of our own knowledge about the cosmos in this latest episode recap and analysis of Carl Sagan's classic series.

A.J.S. Rayl

As fall began to give way to winter at Endeavour Crater, Opportunity cruised deeper into her campsite on the western side of Solander Point in October, heading for a site that may contain clay minerals and the rover's next big discovery, and the Mars Exploration Rovers mission trekked another month closer to its 10th anniversary in January 2014.

Mat Kaplan

Host Mat Kaplan will be joined by Bill Nye the Science Guy, Bruce Betts and Emily Lakdawalla for this special live event.

Matthew Knight

You may have noticed that Comet ISON appears to have a green halo in some recent images, but in other images acquired at about the same time, it doesn’t. Thanks to the beautiful new spectrum posted earlier today by Christian Buil, it’s relatively easy to understand why.

Larry Crumpler

On sol 3451 Opportunity began its climb of Solander Point. This is the highest “mountain” that Opportunity has tried to climb yet.

Emily Lakdawalla

The Martian Geologic Time Scale is a lot more complicated than the Moon's.

Bruce Betts

This week, the United Nations will move one step closer to an international response to the threat from near Earth objects (NEOs).

Emily Lakdawalla

The Space Generation Advisory Council (SGAC) has just announced a new asteroid naming competition, open to anyone, so if you've ever wanted to name an asteroid, now's your chance.

Ken Herkenhoff

After a brief science stop at Darwin (formerly known as Waypoint 1), Curiosity has driven hundreds of meters toward Mount Sharp. Autumn has come to Curiosity's southern hemisphere location, bringing lower temperatures. That means more power is required to heat rover actuators, leaving less power for science along the drive.