A spacecraft captured images of "spiders" on the surface of Mars. Here's what they really are. CBS NewsHundreds of black 'spiders' spotted in mysterious 'Inca City' on Mars in new satellite photos Livescience.comMars Express Spots ‘Spiders' at Outskirts of Martian ‘Inca City' Sci.NewsSigns of 'spider' phenomenon on Mars Phys.orgDavid Bowie was right - there are spiders on Mars! European Space Agency's spacecrafts snap mysterious arachni Daily Mail