A lawsuit filed earlier this week alleges that NASA is ignoring clear evidence for alien life on Mars, claiming that the rock that recently appeared next to the Opportunity rover is not a rock at all, but some type of fungus.

The rock, described as a "jelly doughnut" due to its dark interior and light exterior, is the source of strong scientific and public interest. Scientists on the team are still debating how it got there, but the most accepted theory is that it popped out from under one of the rover's wheels during a drive. The rock appears to have been flipped upside down, exposing a surface not seen for potentially billions of years.