NASA telescope spots ‘cosmic fireworks’ and faint echos from the Milky Way’s supermassive black hole
Astronomers used NASA’s Nuclear Spectroscopic Telescope Array (NuSTAR) telescope to discover nine large X-ray flares coming from Sagittarius A* (Sgr A*), the supermassive black hole at the center of the Milky Way. These flares had previously gone unnoticed. Studying them provides insights into the environment near the black hole. The researchers also discovered X-ray “echoes” […]