PASADENA, Calif. (AP) - NASA has held a party for a 2-year-old that can't walk - but it sure can crawl.
On Tuesday, scientists at the Jet Propulsion Laboratory in Pasadena celebrated the second anniversary of the day that the Curiosity rover landed on Mars.
The rover was only expected to work until June 24 but like the Eveready bunny, it just keeps going.
Among its successes, the rover uncovered signs of an ancient freshwater lake on Mars that could have been capable of supporting primitive life.
NASA's also looking forward to the next rover mission. Launching in 2020, it will include an experiment to distill oxygen from Martian carbon dioxide - which would be useful for a future manned mission.
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