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.

"You get this sense that the pre-Inca and the Inca... they moved mountains." The ancient city is intriguing because—like at other sites in Peru—the Inca built on top of an earlier pre-Inca ...

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 ...

In 2002, National Geographic magazine consulted them for an artistic rendering of Machu Picchu as it ... up to 30 gallons of water per minute to the city. Without modern surveying instruments, the ...

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.

The Inca city in Peru is one of the most recognizable historical sites in the world. Built in the mid-15th century, it served as a royal estate for the rulers of the Inca Empire before the arrival ...

Archaeologists found two 500-year-old quarries in the Cañete mountains and a trail network used during the final stage of the Inca empire ... captured its capital city. During its peak, the ...