In early 2025, special signals wended their way through a fiber-optic highway strung above the streets and sidewalks of the Maryland suburbs. The arrival of those signals at their destination marks a significant step toward a long-held dream of building a...
Black holes are fascinating regions in space where gravity is so strong that nothing, even light, can escape them. The largest known black holes, called supermassive black holes, contain millions to billions of times the mass of the sun and are typically located at...
Lasers have become indispensable in everyday life and research, with applications ranging from data transmission and metrology to manufacturing. Masers, by contrast, have so far found hardly any practical applications. Go to Source
Dark matter’s existence is all but certain—astronomers believe it makes up about a quarter of the universe’s total energy content—yet its true identity has eluded us for decades. Two of the leading candidates for dark matter are the hypothetical particles...
Astronomers have speculated about the mysterious “little red dots” seen through the James Webb Space Telescope’s images of the early universe: They could be galaxies, black holes, quasi-stars, starbursts … or something else entirely. Go to...
