 of human debris on the surface. But, in the new paper, experts say it is unlikely the strange objects were linked to human craft because they do not look like anything sent from Earth. Writing in the journal, the authors say: 'Given that possibly 10 or more craft have crashed upon the surface, coupled with the jettison of equipment associated with landing the rovers, it is possible the spikes and its substrate are human-made and consist of debris that fell onto the surface of Gale Crater){kind=link}
Scientists say they cannot discount possibility that pointy objects found on the Red Planet are debris from extraterrestrial vehicle
An alien spaceship crash landing cannot be ruled out as the cause of the strange pointy protrusions found on Mars, scientists have said.
In April, Nasa’s Curiosity Rover photographed what appear to be rows of spikes, plates and wedges protruding from rocks on the floor of the 96-mile (154 km) Gale Crater.
At the time, astrobiologist Dr Nathalie Cabrol, of the Nasa Ames Research Centre and Search for Extraterrestrial Intelligence (Seti) Institute, said it was “the most bizarre rock” she had ever seen in 20 years of studying Mars.
Now, a new paper published in the Journal of Astrobiology concludes that the formations might be “sand spikes”, similar to those known to form on Earth in water-logged sands during strong earthquakes of magnitude seven and greater.