CMU's Zoe Robot Resumes Search for Life on Earth
Earth. Is there any life here? Nobody knows for sure, although Carl Sagan used the Galileo spacecraft to make an educated guess of "yes" back in 1993. Finding life on planets is a tricky business, as evidenced by the fact that we've so far completely struck out everywhere except our own backyard. It's going to take some practice to figure out where and how to look, which is why a robot named Zoë is heading back to the Atacama Desert in Chile.