When Earth first formed, it was too hot to retain ice. This means all the water on our planet must have originated from extraterrestrial sources. Studies of ancient terrestrial rocks suggest liquid ...

The original, untreated sample Heinz picked up on his Sedona hike, with spots similar to spots on the Mars Sapphire Canyon rock. WASHINGTON, August 12, 2025 – In 2024, NASA’s Mars rover Perseverance ...

On a remote rocky outcropping in northern Canada, scientists have found further confirmation that the area hosts some of the world’s oldest rocks (Science 2025, DOI: 10.1126/science.ads8461). The ...

Vibrant red sandstone surrounded Nicholas Heinz as he hiked in Sedona, Ariz., in January 2024. But an odd rock, smaller than the palm of his hand, caught his eye. The gray basalt peppered with ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

Tara Djokic and co-authors received funding for this research from the Etheridge family descendants; Australian Museum Research Institute, Australian Museum Trust; and Australian Research Council (ARC ...