According to astrobiologist Dirk Schulze-Makuch of the Technical University Berlin in Germany, an experiment to detect the signs of microbial life on Mars could have been deadly.

"This study adds to our understanding of geological and environmental changes on Earth and highlights lava tubes as potential refuges for microbial life, holding significant implications for astrobiology, particularly in identifying biosignatures on Mars ...

Oops? Life on Mars may have been found — before it was accidentally destroyed during a NASA mission nearly 50 years ago, one scientist has suggested. In 1975, just six years after Apollo 11 touched down on the moon,

A scientist has said NASA may have accidentally killed life on Mars during a research mission to find it. For decades, scientists have been trying to find any signs of life on the Red Planet with no conclusive evidence as of yet.

For decades, scientists have posited that to find life on Mars they first need to find water. And in the absence of water, they have tried to see what happens when they introduce it onto the planet.