Summary:
- Researchers have discovered a mysterious mineral called jarosite on the surface of Mars, which is typically found on Earth in areas with acidic water.
- The presence of jarosite on Mars suggests that the planet may have had a more watery and potentially habitable past than previously thought, as jarosite forms in the presence of water.
- This discovery could rewrite our understanding of Mars' geologic history and provide new insights into the potential for past life on the planet.