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NASA's Curiosity rover finds ancient streambed on Mars, evidence of 'vigorous' water flow
Curiosity may have spent a while limbering up for the mission ahead, but now it's found evidence of an ancient streambed on Mars that once had "vigorous" water flow. Photos of two rock outcroppings taken by the rover's mast camera between the north rim of Gale Crater and the foot of Mount Sharp reveal gravel embedded into a layer of conglomerate rock. The shape of the small stones indicate to NASA JPL scientists that they were previously moved, and their size (think from grains of sand to golf balls) are a telltale sign that water did the work instead of wind. Evidence of H2O on Mars has been spotted before, but this is the first direct look at the composition of riverbeds NASA has observed from above. According to Curiosity science co-investigator William Dietrich, it's estimated that water flowed at the site anywhere from thousands to millions of years ago, moved at a clip of roughly 3 feet per second and was somewhere between ankle and hip deep. "A long-flowing stream can be a habitable environment," Mars Science Laboratory Project Scientist John Grotzinger said. "It is not our top choice as an environment for preservation of organics, though. We're still going to Mount Sharp, but this is insurance that we have already found our first potentially habitable environment."
ESA team builds self-piloting rover in six months, tests it in Chilean desert
Chile's Atacama Desert might not be true Martian territory, but it's close enough for the European Space Agency's new rover. Built by a crack engineering team in just six months, the Seeker rover was created to autonomously roam 6 km of Mars-like terrain and trace its way back. The Seeker just wrapped up a two week gauntlet in the Chilean wasteland using ol' fashioned dead reckoning and stereoscopic vision to find its way, compiling a 3D map of its surroundings as it puttered along. The full-scale rover wandered the arid terrain on its lonesome until temperatures forced it to stop after trekking 5.1 km. The red planet won't welcome an ESA rover until 2018, but those jonesin' for news from Martian soil should keep their eyes peeled for Curiosity's August touchdown.
Kapvik micro-rover is the useful sidekick Mars Rovers have always dreamed of
Mars Rovers are big, expensive and prone to damage -- that's why a team from Carleton University is developing the Kapvik micro-rover. Kapvik is designed as a remote-operated sidekick to the primary rover, capable of being dispatched as a scout or to handle side-missions on its own. After the Spirit Rover was trapped in soft soil and lost, the smaller bots will include tethers to pull bigger robots out of trouble -- reducing the chances of losing millions of dollars worth of equipment (and breaking more nerd hearts than a cancelled Daft Punk show). Testing on the newly-unsheathed Kapvik continues, and we've got some sneaky behind-the-scenes footage purporting to be an early test of the bot's Pioneer navigation system after the break. Update: Tim Setterfield from the program has very generously supplied us with a fresh video of the micro-rover as it traverses the sort of bumps that would make previous Mars Rovers run screaming to their mothers, check it out after the break.
