PASADENA, California (AP) — Scientists have solved the mystery of the "jelly doughnut" rock on Mars that appeared to come out of nowhere.
NASA said Friday that a wheel of the rover Opportunity broke it off a larger rock and then kicked it into the field of view.
The Internet was abuzz last month when the space agency released side-by-side images of the same patch of ground. Only one image showed the rock, which was white around the outside and dark red in the middle, and less than 2 inches (5.08 centimeters) wide.
Scientists had suspected that one of Opportunity's wheels kicked the rock as it drove. They received confirmation after analyzing recent images of the original piece of rock.
Opportunity recently celebrated 10 years on Mars. Its twin Spirit stopped communicating in 2010.
Most Popular Stories
- 5 Notable Hispanic Technology Executives
- Top Hispanic Tech Companies Push for the Top
- Russia, Crimea Discuss Referendum
- Maya Angelou Cancels Milagro Gala Appearance Due to Illness
- 'Holy grail of guitars' OM-45 Deluxe Available in in NY Auction
- Justin Bieber Loses Cool Over Selena Gomez
- Spotify Picking up Echo Nest
- GOP 2016 Hopefuls Face Off at CPAC
- Getty Releases Millions of Images for Free Via Embed Tool
- Daylight Savings Time Comes This Weekend