https://en.wikipedia.org/wiki/Life_on_Mars

The possibility of life on Mars is a subject of significant interest to astrobiology due to its proximity and similarities to Earth. To date, no proof has been found of past or present life on Mars. Cumulative evidence shows that during the ancient Noachian time period, ...

https://www.space.com/41922-mars-life-energy-source-underground.html

Sep 25, 2018 ... If life ever got a foothold in the Martian subsurface long ago, it could have tapped into a plentiful chemical energy source, a new study suggests.

https://www.space.com/could-mars-support-life-today.html

May 9, 2019 ... Indeed, some astrobiologists view ancient Mars as an even better cradle for life than Earth was, and they suspect that life on our planet may ...

https://www.sciencedaily.com/releases/2018/09/180924102040.htm

Sep 24, 2018 ... A new study shows that the breakdown of water molecules trapped in ancient Martian rocks likely produced enough chemical energy to sustain ...

https://mars.nasa.gov/programmissions/science/goal1/

Science Goal 1: Determine if Life Ever Arose On Mars ... On Mars, we will therefore search for evidence of life in areas where liquid water was once stable, and ... that water had been present for a long time--perhaps long enough for life to have ...

https://www.scientificamerican.com/article/ancient-mars-could-have-harbored-life-for-a-long-long-time/

http://blogs.discovermagazine.com/d-brief/2018/09/25/mars-underground-habitable-zone-could-have-housed-life-for-millions-of-years/

Sep 25, 2018 ... For decades, scientists have been scanning Mars' surface for signs of ancient life. But by digging a little bit deeper, they've come across historic ...

https://www.sciencealert.com/mars-conditions-for-life-slimes-underground-water-radiolysis-chemosynthesis

Sep 25, 2018 ... It's one of the biggest questions in the Solar System: was there ever life on Mars? And, if yes, will we ever find evidence for it? We still don't ...

https://www.livescience.com/63048-proof-of-mars-life-accidentally-burned.html

Jul 12, 2018 ... NASA Discovered Evidence of Life on Mars 40 Years Ago, Then Set It On ... This was an exciting find at the time; scientists knew that ancient ...

https://www.smithsonianmag.com/science-nature/life-on-mars-78138144/

Working with Harvard paleobotonist Elso Barghoorn, Tyler proposed that the shapes were actually fossils, left behind by ancient life-forms such as algae. Before ...