Peppercorn-sized clumps of human brain cells grown in a lab for a record seven years aged similarly to those inside our heads, suggesting they "recorded the passage of time," scientists said Wednesday.
Of Jupiter's four Galilean moons, Callisto is the one that gets the least attention. Io is constantly being resurfaced by volcanoes. Europa has a giant liquid water ocean. And Ganymede has its own magnetic field that interacts with its parent planet in weird ways. Callisto, by comparison, seems sedate, with its ancient, crater-saturated surface seemingly frozen in time. But new data from the James Webb Space Telescope (JWST) shows that even this most benign of the Big Four moons is more active than previously realized.
Blue morpho butterflies have captivated the human eye for centuries. We even have one as an emoji on our phones. In a recent experiment, researchers at the Smithsonian Tropical Research Institute (STRI) documented for the first time that hot temperatures during development can reduce the brightness of their iridescence. At hot temperatures, such as those projected in future warming scenarios, the structures responsible for their iridescent color could change enough that common bird predators and other butterflies of the same species would likely see a color change.
China said on Sunday it was postponing its planned ambitious Chang'e-7 lunar mission, which was set to carry out explorations including searching for water ice on the moon.
Superconductors are materials that carry electrical current with zero resistance below a specific critical temperature. In conventional superconductors, the transition to superconductivity generally occurs at very low temperatures.
Electron microscopes are used wherever particularly small details need to be imaged. But from a strictly physical point of view, every electron in a conventional electron microscope represents a missed opportunity: If all you do is count electrons, any additional quantum information they carry remains unused.
A global symbol of parties and celebrations but an environmental headache, the humble balloon is undergoing a green revolution thanks to U.K. researchers.
