Alien life
The researchers in the article seemed to have found an ancient form of microbial life that lived in a different enviroment than we have now. This makes a case for life forms being able to exist in different environments than what we find on earth. There are also extremophiles, life that lives in extreme environments ranging from volcanic vents to super acidic waters. This shows that life can exist beyond the "Goldilocks" realm of not too hot and not too cold.