Perseverance Rover Finds Ancient Mars Delta

United States — NASA's Perseverance (rover) has detected the underground remains of an ancient river delta on Mars using ground-penetrating radar. This discovery, dating back 3.7 to 4.2 billion years ago in Jezero Crater, provides some of the oldest evidence of water flow on Mars. Researchers, including Emily Cardarelli and David R. Paige from the University of California, Los Angeles, published these findings in Science Advances. The presence of a water-rich environment capable of biosignature preservation is of significant interest for the possibility of past life on Mars. This finding complements previous discoveries by Perseverance (rover) of potential biosignatures in rock samples and other rovers like Zhurong (rover) and Curiosity (rover) that have also found evidence of past water on Mars.