This animation depicts water disappearing over time in the Martian river valley Neretva Vallis, where NASA’s Perseverance Mars takes the rock sample named “Sapphire Canyon” from a rock called “Cheyava Falls,” which was found in the “Bright Angel” formation. Credit: NASA/JPL-Caltech

This very well could be the clearest sign of life that we’ve ever found on Mars,’ says acting Nasa administrator

The discovery of organic-carbon-bearing mudstones within the Bright Angel formation raises intriguing questions about Mars' habitability. The organic matter detected in these mudstones appears to have engaged in post-depositional redox reactions, contributing to the observed mineralogy. Key findings include:

Computer simulations have revealed that a vast region of the Yucatan Peninsula, Mexico, may have behaved like a fluid during the formation of the Chicxulub impact crater. Gareth Collins, a postgraduate student in the TH Huxley School of the Environment ...