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Extreme experiments have revealed how diamond behaves at crushing pressures beyond those inside Neptune and Uranus, resolving a decades-old conflict between theory and observation. The results could help scientists boost fusion energy output while .. ...

A discarded SpaceX Falcon 9 stage crashed into the Moon on Aug. 5, leaving behind a newly formed crater about 60 feet wide. NASA's Lunar Reconnaissance Orbiter captured detailed images showing bright and dark streaks of debris blasted across the ...

Spain's total solar eclipse delivered an unexpected sight: a corona glowing gold instead of its usual pearly white. Because the Sun was setting, its light passed through more atmosphere, while smoke from nearby wildfires filtered out even more blue . ...

MIT physicists found that two electronic phases inside the same quantum material emerge through surprisingly different mechanisms--one smoothly and the other in expanding pockets resembling growing ice crystals. The discovery could help explain how . ...

A tiny machine made from just an atom and particles of light may sound impossibly simple, but it raises a surprisingly difficult question: what counts as heat, and what energy can still do useful work? University of Basel researchers have developed a ...

Researchers have built microscopic, light-driven robots that can rapidly navigate through liquid, collect bacteria, and deposit them in chosen locations. These tiny "cleaners" could open new possibilities for manipulating cells and microbes with ...

A magnetar's colossal magnetic field may have revealed a quantum effect predicted by Werner Heisenberg nearly 90 years ago, in which seemingly empty space alters the behavior of light. If confirmed, the discovery could offer the first direct evidence ...

Einstein's abandoned cosmological constant made a spectacular comeback when astronomers discovered that the universe's expansion is accelerating. It now sits at the heart of our best cosmological model--a model that works extraordinarily well, yet .. ...

Astronomers may finally have a clue to what happens to the mysterious "little red dots" that crowded the early universe. By studying a spiral galaxy nicknamed the "Saguaro," researchers found a compact, bright red center that closely resembles these ...

Caltech scientists have created ultra-low-loss optical pathways on silicon chips that approach the efficiency of fiber optics and dramatically outperform existing technology at visible wavelengths. The breakthrough could unlock more powerful lasers, ...