Cosmic Timekeepers: Pulsars that Spin Like Lighthouses

Added: 2026-05-24

[00:00:00]Ever heard of pulsars that spin so fast they can be like cosmic lighthouses?

[00:00:04]>> [music] >> Some of these incredibly dense neutron stars rotate hundreds of times per second, emitting beams of radiation that flash like a strobe light across the cosmos. [music] What's wild is that they can be so precise and stable in their rotation that they are used by astronomers as cosmic timekeepers, allowing us to measure time and distance in ways we never thought possible.