Why do pulsars spin so fast? These cosmic lighthouses are what’s left after massive stars collapse. Imagine the mass of our Sun, crushed into something the size of a city — spinning hundreds of times every second. That’s angular momentum at work. The fastest pulsar ever recorded, PSR J1748-2446ad, spins more than 700 times per second — faster than a blender, and just shy of tearing itself apart. Each rotation sends a beam of energy sweeping across space like a perfect cosmic clock. #space #scien