NASA photos appear to show a pyramid-like structure the same size as Giza on Mars, prompting speculation about whether an ...

Nasa’s Curiosity rover has been investigating the spider-web-like rock formations found on Mars – and found mysterious egg-like structures. Newly issued images show giant zig-zagging ridges, known as ...

Scientists have long thought there are a series of pyramid-like structures on Mars, with recent images showing one that could ...

A triangular, pyramid-like structure on Mars’ Candor Chasma has sparked debate. Seen in multiple NASA images since 2001, ...