2+ hour, 11+ min ago   (899+ words) Information fills hard drives, crosses computer networks and describes the properties of physical systems. One physicist argues it may also have something far more surprising: measurable mass. Dr. Melvin Vopson of the University of Portsmouth has proposed an experiment designed…...

3+ day, 14+ hour ago   (1074+ words) An ADN green rocket thruster ignited electrically at room temperature, eliminating the need for a preheated catalyst bed. (CREDIT: Wikimedia / AI-Generated / CC BY-SA 4.0) An experimental “green” rocket thruster has fired successfully using ammonium dinitramide fuel without the catalyst bed normally…...

3+ day, 17+ hour ago   (1172+ words) The Apophis 2029 flyby could reveal asteroid surface shifts, spin changes and new lessons for planetary defense. (CREDIT: Wikimedia / CC BY-SA 4.0) On April 13, 2029, a 340-meter asteroid will sweep past Earth at about 38,000 kilometers, close enough for its gravity-driven changes to become…...

4+ day, 14+ hour ago   (1024+ words) Binary asteroids can behave less like two simple rocks in orbit and more like a tightly coupled mechanical system. Their shapes, positions and rotations all influence one another, making long-term predictions difficult and exposing weaknesses in standard numerical methods. That…...

5+ day, 19+ hour ago   (1161+ words) Scientists including UWM Professor David Kaplan have determined the identity of a long-period radio transient to be a white dwarf accreting material from its neighboring star, as illustrated in the graphic above. (CREDIT: NASA/CXC/M.Weiss) A strange radio signal…...

5+ day, 21+ hour ago   (1159+ words) Shackleton crater on the Lunar South Pole. The Chang’e-7 Moon mission will send a hopper toward shadowed south pole craters in search of accessible lunar water ice. (CREDIT: NASA’s Scientific Visualization Studio) Some of the Moon’s most valuable terrain sits…...

5+ day, 23+ hour ago   (693+ words) That assumption may not hold. A team from Perimeter Institute and the University of Maryland reports that the conversion process can trigger powerful nonlinear effects in plasma. Those effects quickly disrupt the resonance that drives energy transfer, shutting the process…...

6+ day, 21+ hour ago   (1257+ words) This computer-simulated image shows gas from a tidally shredded star falling into a black hole. Astronomers observed the flare in ultraviolet light using NASA’s Galaxy Evolution Explorer. (CREDIT: NASA/ S. Gezari (JHU)/ J. Guillochon (UCSC)) A star can skim dangerously…...

1+ week, 2+ day ago   (690+ words) Helium X-ray high-harmonic generation reaches 280 eV as correlated electrons appear to break the conventional energy cutoff. (CREDIT: U Wien) The result challenges the standard picture of high-order harmonic generation, or HHG, a process that converts laser light into coherent extreme-ultraviolet…...

1+ week, 2+ day ago   (850+ words) Radiation belt particle diffusion may be mimicked by predictable particle motion that spacecraft cannot fully resolve. (CREDIT: Shutterstock) High-energy particles trapped in Earth’s radiation belts can look as if they are spreading randomly, even when their motion is fully predictable....