F. Acero

For two years, the LST-1 prototype tracked the flickering of distant space beacons — blazars. At their centers, supermassive black holes act like giant spotlights, shooting out narrow beams of gamma rays. The telescope didn't catch the rays themselves, but their atmospheric footprints — faint blue f

Scientists recorded radio emission from supernova SN 2007it, which flared in 2007. The signal arrived 18 years later: all that time, the shock wave was pushing through rarefied space until it hit a dense gas cloud. The discovery clarifies how massive stars lose mass before exploding.