‘NASA’s Unexplained Files’: What are Mars Blueberries?

In January 2004, all eyes were on NASA’s Opportunity rover as it descended onto Mars. Once the rover began transmitting data, scientists encountered geology unlike any they had expected.
3/26/2014
Updated:
7/18/2015

In January 2004, all eyes were on NASA’s Opportunity rover as it descended onto Mars. Once the rover began transmitting data, scientists encountered geology unlike any they had expected.