22-Million-Year-Old Andes Landscape Preserved by Giant Pompeii-Scale Eruption

An explosive volcanic eruption in northern Chile nearly 22 million years ago buried an ancient Andean landscape under more than 1,260 cubic kilometers of hot ash, pumice, and gas, creating a geological time capsule that reveals how slowly the mountains rose, according to a study published in Science Advances. How the Cardones Ignimbrite Preserved Northern … Read more

Green, Catalyst-Free Rocket Thrusters Developed for Next-Gen Spacecraft

An experimental green rocket thruster has successfully ignited at room temperature using electricity instead of a preheated catalyst bed, according to research reported in Space: Science & Technology. The system passes electrical current directly through ammonium dinitramide (ADN) propellant to generate Joule heat, offering a potential path around the lengthy warm-up times and severe durability … Read more