NASA scientists on Earth have recreated the creepy black "spiders" that litter the surface of Mars. The breakthrough left the researchers "shrieking" with joy and could help uncover further secrets about the mysterious structures.
"Spiders on Mars" is the name given to a geological feature, known as araneiform terrain, that is visible in multiple locations on the Red Planet. In these places, hundreds of dark crack-like structures appear on the planet's surface, each with potentially hundreds of individual lines, or "legs." When viewed from above, these tightly grouped deformations, which can be more than 3,300 feet (1,000 meters) wide, look like a hoard of spiders scurrying across the Martian landscape.
