Watch Live As a Mountain-Sized Comet Zooms By Mars

Siding Spring sounds like such a tranquil name for a massive comet. After traveling millions of years at the leisurely pace of about 33 miles per second, the comet will fly by Mars at around 2:25pm EDT or so, passing only 138,000 kilometers from the red planet. This is a little bit more than one-third the distance of… » 10/19/14 1:35pm Yesterday 1:35pm

Spectacular comet will engulf Mars this Sunday in historical event

This Sunday something historical will happen: An ancient rare comet will arrive to Mars after millions of years traveling at 33 miles per second from the Oort cloud. It will look like you can see above, passing just within a third of the distance from the Earth to the Moon, engulfing the Red Planet in its large tail. » 10/17/14 1:44pm Friday 1:44pm

A French Inventor Once Proposed a Giant Mirror to Burn a Message on Mars

When we want to leave our mark on Mars today, we simply send over a few Rovers to roll around in its red soil. But 150 years ago, scientists had very different plans for contacting the planet, including one French inventor who wanted to use the refracted light of the sun to sear a welcoming message into the Martian… » 10/16/14 2:35pm Thursday 2:35pm

Wernher von Braun Predicted We'd Send Men to Mars No Sooner Than 2050s

Student researchers at MIT have concluded that given current technology, any colonists to Mars would die after about 68 days. Mars One, the company that hopes to put people on Mars by the 2025 (and film a reality TV show there, so you know they're legit) insists that the MIT researchers are wrong. But as any student… » 10/15/14 1:20pm Wednesday 1:20pm

MIT Study Says Mars One Colonists Would Starve (Among Other Things)

Mars One may have taken us by surprise when the non-profit organization boldly announced that it would put colonists on Mars in the 2020s. We were even more amazed when legions of amateur astronauts signed up for a one-way ticket to the red rock. However, MIT students believe the effort, in its current form, is doomed… » 10/12/14 1:00pm 10/12/14 1:00pm

Maven Delivers Its First Ultraviolet Images From Mars

Piling on to the good news from Mars this week, NASA's Maven spacecraft sent home its first ultraviolet images from Mars. While they may not be flashy, these images will help determine the composition and variability of the upper atmosphere, and investigate the mystery of when the water escaped. » 9/26/14 2:18am 9/26/14 2:18am

Nobody Knows How These Strange Ridges Appeared on Mars

The technology used to map to Mars is advancing at a thrilling rate and uncovering all kinds of curiosities. The latest head-scratching image comes from the Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE). It reveals a series of mysterious sandy ridges. No one knows exactly how they… » 9/19/14 10:53am 9/19/14 10:53am

At last, Mars Curiosity finally reaches its destination

This is it. Curiosity has reached its prime destination. After a brilliant conception, an amazing landing, and two years of continuous travel, the rover is now at the base of Aeolis Mons—aka Mount Sharp—a mountain that rises 18,000 feet (5.5 kilometers) at the center of Gale Crater. This is where the real fun begins. » 9/11/14 2:54pm 9/11/14 2:54pm

NASA Will Reformat Mars Rover's Flash Memory From 125 Million Miles Away

NASA's Opportunity rover is still trundling across the surface of Mars, more than 11 years after its 90 day mission began. But its software is getting bogged down, so NASA's doing a full system backup, memory wipe, and reboot. It's just like your routine computer cleanup, just from the next planet over. » 8/30/14 4:00pm 8/30/14 4:00pm

NASA gives the go-ahead to the world's most powerful rocket

Today, NASA has officially committed to build the new Space Launch System, the world's most powerful rocket ever, which hopefully will take us to Mars by 2030. The program is now set for development—the 'first time that an exploration class vehicle has gotten this status since the space shuttle.' » 8/27/14 8:41pm 8/27/14 8:41pm

Here's How to Explore the Moon and Mars in Google Maps

Everyone's favorite lil' rover, Curiosity, has now been rolling around Mars for two years. So it's high time Google Maps got in on the action—and now, to celebrate the anniversary, it's launched Maps for Mars and the Moon. Getting pin man into space is pretty easy, if you follow a few steps. » 8/07/14 11:09am 8/07/14 11:09am