Scientists have confirmed what became of a star that exploded in a stunning supernova visible to Earth more than three decades ago: It morphed into a neutron star, one of the oddest objects in the universe. But NASA’s Webb Space Telescope cut through the clutter by peering in infrared light and saw two telltale chemical signatures — argon and sulfur …
Nearly a month after the Event Horizon Telescope snapped the first image of the black hole at the center of the Milky Way galaxy, astronomers have found a unique object in the universe — a free-floating black hole. Gravitational microlensing is a process where astronomers observe the light from a star far behind the black hole, which is momentarily brightened …
