What’s a pulsar? Why does it pulse?

The Singularity on Instagram: "The real “sound” of a pulsar star captured by NASA is actually a scientific conversion of space signals into audio. Since space is a vacuum where sound waves cannot travel, astronomers use radio waves, X-rays, and gamma-ray emissions from a pulsar and transform them into audible frequencies through data sonification. What we hear is the translated rhythm of intense electromagnetic radiation coming from a rapidly spinning neutron star deep in space. A pulsar forms a