When a strange, jelly doughnut-shaped rock suddenly appeared in front of the venerable Mars rover Opportunity a few weeks ago, many people demanded NASA investigate.

During a Twitter press conference at NASA, William Shatner asked What’s Up with the Mystery Rock on Mars?

“We’ve got another question from Twitter, this one from William Shatner,” Nasa spokesman Guy Webster said. “He’d like to know if you’ve ruled out the Martian rock throwers in the case of the jelly doughnut.”

“I think Martian rock throwers are unlikely, though we’ll keep our eyes open for those,” Squyres said. “We did actually have another scenario which we’re still thinking about. It’s the ‘smoking hole in the ground hypothesis’ as I’ve called it. We cannot yet rule out the possibility with certainty that there wasn’t a freshly formed impact crater nearby, and that this is a piece of stuff that was thrown out by a small impact.”

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Above: the rock before and after

Source Space.com