NASA rated the discovery at a high level on the CoLD (Confidence of Life Detection) scale. This system measures the degree of certainty regarding signs of life.
What this discovery means
If confirmed, it would demonstrate that Mars was much more habitable than previously thought. These halos represent the strongest clue found so far regarding the existence of microbial organisms on the planet.

NASA's next steps
The agency plans to bring these rocks to Earth in future missions. Analyzing them in laboratories would allow scientists to confirm or rule out a biological origin.
Whatever the result, it will mark a turning point in space exploration and in our view of the universe.











