Yesterday's 263-foot drive by the NASA's Opportunity put Mars Rover's total distance driven at 35.76 km, breaking the 40-year-old record for the greatest distance driven by a NASA vehicle on another celestial body. But Opportunity still hasn't quite beaten the record set by the USSR's Lunokhod 2.

Intentional or no, this is pretty funny. Don't even pretend like you're above it. Because you're not.

How does Curiosity compare to NASA's other roving Martian robots?

Here's a freshly-updated infographic by SPACE.com's Karl Tate, illustrating the distances driven by various rovers on the Moon and Mars.

Harsh words from Randall Munroe's XKCD regarding the achievements of America's space program. To be fair, he was good to follow up his diss by noting that "[NASA's Mars rovers] Spirit and Opportunity are pretty awesome. And Kepler. And New Horizons, Cassini, Curiosity, TiME, and Project M."

It's one of the most impressive photographs of Mars' Endeavour crater ever taken, but the image featured here is special for another reason, as well: it features the photographer (or, at least, the photographer's shadow).

The Muppets' Dr. Bunsen Honeydew considers himself the foremost pioneer in crazy scientific endeavors. So when NASA landed the Rovers Spirit and Opportunity on Mars, Bunsen was understandably miffed. Still he was classy enough to send a letter of congratulations to the team, along with his offer of help.

NASA's Opportunity rover has been sending images of Mars back to Earth since 2004. Now, computer scientist Mark Powell, of NASA's Jet Propulsion Laboratory, has developed a free app for iPhone and Android that wires these photos directly to your phone.

A few weeks ago, NASA scientists announced they'd discovered something completely new on the surface of the Red Planet. Now they know what it is —and they're calling it the most powerful evidence for liquid water on Mars ever encountered by the Opportunity Rover.

For decades, humanity has been launching missions to Mars, in hopes of making sense of the enigma that is our solar system's most Earth-like planet. And as with all good mysteries, many of our investigations have simply led to more questions.