Mars mystery rock
PASADENA, CALIFORNIA- NASA says the Mars rover Opportunity found a rock on the red planet that wasn't there 12 days ago.
Opportunity took a photo then that showed no rock and took a picture of the same spot and the rock was there.
Scientists have theories but aren't sure how the rock got there.
The discovery comes as NASA celebrates ten years since the Spirit and Opportunity rovers landed on Mars.
Spirit's mission ended almost four years ago when it lost the use of two wheels and stopped communicating.
Opportunity is still active and sending back pictures.
Desktop NewsClick to open Continuous News in a sidebar that updates in real-time.
Just in time for bed, evacuation lifted after gas line rupture
Water to be cut off for residents delinquent on sewer fees
St. George organizers submit 4,630 additional signatures
City leaders address concerns about Jones Creek Road construction
Iberville deputies train for 'shoot/don't shoot' situations