Radioactivity and nuclear decay explained. GCSE Physics #nucleardecay #radiation #radiation #radioactivity #alpha #beta #gamma #wave #exams #revision #gcse #stem #school #science #combinedsciencegcse #physics | Matt Green

NASA has detected the longest gamma-ray burst ever recorded, an extreme cosmic explosion that lasted nearly seven hours — far longer than typical gamma-ray bursts, which usually fade within seconds or minutes. This unprecedented event is believed to have occurred when a black hole plunged into a massive star, tearing through it from the inside while feeding on stellar material. As the star collapsed, the black hole formed a hot spinning accretion disk and launched powerful relativistic jets, rel