Has Nasa found evidence of ancient life on Mars?

Nasa has announced the first detection of possible biosignatures in a rock on the surface of Mars. 

A mega-tsunami on ancient Mars

A new research is lending support to the possibility that an asteroid slammed into Martian ancient ocean 3.5 billion years ago, creating a mega-tsunami 309 meters high.

Evidence that Mars Used to Have a Ring

The ringless Mars we see today is probably an anomaly. We’re in between rings right now, and we’ve assumed that’s normal.

Mars May Have Been More “Earth-Like" 4 Billion Years Ago

4 billion year old Nitrogen containing organic molecules has been discovered in Martian meteorites. This finding suggests a wet and organic-rich early Mars, which could have been habitable and favorable for life to start.

Mars once had salt lakes similar to Earth

According to an international team of scientists, the lake that was present in Gale Crater over 3 billion years ago underwent a drying episode, potentially linked to the global drying of Mars.

Signs that Ancient Rivers Flowed Across the Surface of Mars

There’s a massive, growing wall of evidence showing that Mars may have had the necessary conditions for life in the past. ESA’s High-Resolution Camera on the Mars Express Orbiter, there are clear signs of a system of river valleys.