In a first-of-its-kind experiment, NASA recreated the conditions needed to make the iconic Mars "spiders" seen on the Red Planet. Earlier this year, the Mars Express captured photo evidence of these ...

Over two decades since NASA researchers first saw images of mysterious, spider-like formations across the southern hemisphere of Mars, the space agency announced it's recreated the planet's "spiders" ...

Spider-shaped features called araneiform terrain are found in the southern hemisphere of Mars., carved into the landscape by carbon dioxide gas. This 2009 image taken by Nasa's Mars Reconnaissance ...