(CNN) -- When you're President of the United States your autograph can turn up anywhere.
Even on Mars.
Recently the camera attached to the Mars rover Curiosity,
usually tasked with taking photos of dirt and rocks, sent back a shot
of President Obama's signature. The signature was at the top of an
anodized aluminum plaque bolted to the most recent Mars rover Curiosity.
Other signatures also on the plaque, Vice President Joe Biden and
NASA Administrator Charles Bolden.
Similar plaques with signatures of U.S. officials were attached to the lander platforms for NASA's Spirit and Opportunity rovers.