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

Evidence of alien life or cosmic pyramid scheme? A documentary filmmaker sparked a discussion of advanced Martian ...

A strange formation spotted deep within a massive Martian canyon is once again fueling debate over whether something more ...

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

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. NASA has released two new ...

Add Yahoo as a preferred source to see more of our stories on Google. NASA's Mars Curiosity rover has been exploring a curious geological formation made up of ridges that look like spiderwebs from ...