Hundreds of black 'spiders' spotted in mysterious 'Inca City' on Mars in new satellite photos

Every spring, creepy black 'spiders' sprout up on Mars as buried carbon dioxide ice releases dusty geysers of gas. New ESA images show the phenomenon has begun in the strange Inca City formation. Mars' Inca City formation (left) is overrun with mounds of black 'spiders' (right), a regular springtime phenomenon on the Red Planet(Image credit: ESA/DLR/FU Berlin (left) ESA/TGO/CaSSIS (right)) Arachnophobes need not fear: A new European Space Agency (ESA) image of Martian "spiders" actually shows seasonal eruptions of carbon …