How do we know Neutron Stars/Pulsars spin so quickly, if at all?
We've all been taught that Neutron stars spin hundreds or thousands of times per second. They are city-sized objects spinning at near the speed of light. How do we know they're spinning and not just "pulsing"? I have a hard time imagining such a large object spinning so fast without instantly ripping itself apart. Can someone explain how it works and how it's possible for them to spin so fast? #science