The biggest update yet. • Spinning black holes: real Kerr light paths, with the spin from 0 to 0.998. • Dive in: fall through the event horizon, your clock and a distant one running — then a fall report: how many years the outside lived while you fell, and how many it would have if you had held still. • Spaghettify: drop a real spacecraft — the Saturn V, Hubble, the Lunar Module, the Space Station — an astronaut, an asteroid, Earth or the Sun into a black hole and watch the tide tear it apart. • Throw a probe: aim it round a black hole and watch it circle, swing round on a rosette, fall in or get away, its clock slowing against a distant one. • Merge: two black holes spiral together, with the chirp the first gravitational waves made. • Six real black holes — TON 618, M87*, Sagittarius A*, Cygnus X-1, Gaia BH1 and GW150914 — each seen from Earth's angle. • Telescope look: what the Event Horizon Telescope would see, at true scale. • Light paths: watch light bend, and the orbits that matter, drawn to scale. • Readouts: time dilation, orbits and tides in real units. • Jets, powered by the spin. • A smoother, cooler picture: sharper at every quality, and gentler on your battery. • Sound made live from the physics — pitch follows the hole's clocks, and tides creak. • A sharper photon ring, and a new Explore bay that gathers it all.