How does a 10,000-kilogram rock move on Mars?
A 10,000-kilogram boulder moving around and gullies that look suspiciously like rivers, not on Earth, but on Mars. Expertise Network postdoc Lonneke Roelofs explains it in a new video from the ‘Universiteit van Nederland’. For years, scientists have puzzled over this: is this evidence of water on Mars and does it mean that alien life …
