Opportunity Breaks the Record for Extraterrestrial Roving

Well it’s official: after over a decade of roving on Mars, NASA’s Opportunity rover has surpassed the off-world driving record previously and proudly held by the Soviet Lunokhod 2 rover since 1973*! As of July 27, 2014, the tenacious solar-powered Opportunity racked 25.01 miles (40.25 kilometers) on its odometer as it traveled along the southern rim of…

What Made This Curious Cross Pattern on the Moon?

It’s not a trick of the light or camera sensor artifacts, there are actually geometric lines etched into the lunar surface in the image above, captured by NASA’s Lunar Reconnaissance Orbiter. But these aren’t the work of ancient aliens (or Richard Hoagland’s favorite Photoshop filters) —  they’re tracks left by the Soviet rover Lunokhod 2 during its…