Quote Originally Posted by halfeye View Post
I heard that pulsars pulsed because they are rotating, but that doesn't seem to really explain it if all of them pulse, because if they pulse in a beam, why does that beam usually find us, a beam ought to miss pretty often.
A Pulsar is a rotating Neutron Star that happens to "flash" us with the EMR being emitted from the poles. Compare to throwing a laser pointer in the air. It has a constant beam of light (or in the pulsar's case, other EMR, usually X-rays), but we only detect it when it points at us.