Many of the basic observational facts about radio pulsars were
established shortly after their discovery  by Jocelyn Bell and Anthony Hewish in 1967. In the intervening
years, theoretical and observational progress has flourished.
Although there are many remaining questions, particularly about
the emission mechanism, the basic model has long been established
beyond all reasonable doubt
Pulsars are rapidly rotating, highly magnetised neutron stars
formed during the supernova explosions of massive () stars. In the following, we discuss the basic observational
properties most relevant to this review.