<P> Video - Crab Pulsar - bright pulse & interpulse . </P> <Li> Play media <P> Video - Vela pulsar - X-ray light . </P> </Li> <P> Video - Vela pulsar - X-ray light . </P> <Li> Play media <P> Video - Artist's impression of AR Scorpii . </P> </Li>

With what type of telescope was the first pulsar discovered