The departure from theoretical calculations eludes explanation Positronium is positively puzzling. A new measurement of the exotic “atom” — consisting of an electron and its antiparticle, a positron — disagrees with theoretical calculations, scientists report in the Aug. 14 Physical Review Letters. And physicists are at a loss to explainContinue Reading
Nearly 40 years of satellite data from Greenland shows that glaciers on the island have shrunk so much that even if global warming were to stop today, the ice sheet would continue shrinking. The finding, published today, Aug. 13, in the journal Nature Communications Earth and Environment, means that Greenland’sContinue Reading
The devices will reach their potential only if they can fix their glitches Astronaut John Glenn was wary about trusting a computer. It was 1962, early in the computer age, and a room-sized machine had calculated the flight path for his upcoming orbit of Earth — the first for anContinue Reading
Bose-Einstein condensates in space could reach temperatures lower than any known in the universe On the International Space Station, astronauts are weightless. Atoms are, too. That weightlessness makes it easier to study a weird quantum state of matter known as a Bose-Einstein condensate. Now, the first Bose-Einstein condensates made onContinue Reading
Electricity flows without resistance on the rim of molybdenum ditelluride Superconductors are getting edgy. For the first time, scientists have spotted a superconducting current traveling along the edge of a material, like a trail of ants crawling along the rim of a dinner plate without venturing into its middle. Normally,Continue Reading
