The European Space Agency reported a surprising finding in a region of Mars known as Inca City, in which dark shapes resembling spiders were discovered by the agency's Mars Express orbiting satellite.

Rather, a strange chemical reaction recently captured by European Space Agency probes is to blame for the spider-like feature spotted at a formation known as Inca City in Mars' southern polar region.

The European Space Agency (ESA) released new images of these seasonal eruptions in a formation called Inca City in Mars’ southern polar region. Mars has four distinct seasons, similarly to Earth.

April showers bring May flowers on Earth — but on Mars, spring brings surface "spiders. Seasonal, spider-like features have been spotted sprouting through cracks in Mars' surface. The European ...