A mysterious doughnut-shaped piece of rock has appeared on Mars, which leaves the scientists at NASA shocked because the same spot when photographed two weeks earlier did not have anything in it.

A white rock with a dark low spot in the middle was found on Mars according to Steve Squyres, a scientist who leads the Mars exploration rover mission. Photos were taken of the same spot on Mars twelve days apart but the rover's panoramic camera showed a barren bedrock on mission day 3528 (in Mars time) until one of the days a photo of the same scene revealed the mysterious, doughnut shaped rock, which gave explorers a spooky feeling.

"It's like nothing we've ever seen before," Squyres said. "It's very high in sulphur, it's very high in magnesium, it's got twice as much manganese as we've ever seen in anything on Mars."

The appearance and makeup of the rock has never been encountered in the past and leaves many people with mind-blowing questions, especially regarding the possibility of aliens.

Scientists are trying to find a logical explanation with the primary idea being that the rover had kicked something up while driving nearby. "We had driven a metre or two away from here, and I think the idea that somehow we mysteriously flicked it with a wheel is the best explanation," Squyres said. Either that or it was caused by a meteor that impacted mars.

Photos were shown of this suspicious geological dessert at a recent NASA event celebrating 10 years since the Spirit of Opportunity rover landed on the planet. "One of the things I would like to say is that Mars keeps throwing at us new and unimaginable things," Squyres said at the event while gazing at the photo of the rock and laughing.

Scientists used to think no matter how long the rovers lasted, at some point in the mission the team could say "we're finished" and that they had learned everything possible about Mars with the available equipment. But recent events have inspire them to believe that there will always be something fascinating beyond our knowledge. In the coming years, NASA is planning to consider another rover mission, possibly in 2020.