Nasa says Mars mystery rock that ‘appeared’ from nowhere is ‘like nothing we’ve seen before’
http://www.independent.co.uk/news/sc...e-9070323.html
A mysterious rock which appeared in front of the Opportunity rover is "like nothing we've ever seen before", according to Mars exploration scientists at Nasa.
Experts said they were "completely confused" by both the origins and makeup of the object, which is currently being investigated by Opportunity's various measuring instruments.
Astronomers noticed the new rock had "appeared" without any explanation on an outcrop which had been empty just days earlier. The rover has been stuck photographing the same region of Mars for more than a month due to bad weather, with scientists at the Jet Propulsion Laboratory (JPL) in California monitoring the images it sends.
Nasa issued a Mars status report entitled "encountering a surprise", and lead Mars Exploration rover scientist Steve Squyres told a JPL event it seems the planet literally "keeps throwing new things at us".
He said the images, from 12 Martian days apart, were from no more than a couple of weeks ago. "We saw this rock just sitting here. It looks white around the edge in the middle and there’s a low spot in the centre that's dark red - it looks like a jelly doughnut.
"And it appeared, just plain appeared at that spot - and we haven't ever driven over that spot."