what is a pulsar? – Training Zone

Question: what is a pulsar?
- Keywords:
  pulsar
Asked by Sheldon Cooper to Anne, Beth, COLFlight, Jon, Tom on 15 Oct 2015.
- Beth Healey answered on 15 Oct 2015:
  
  It’s a rotating star composed by neutrons. Here is some more information which you might find interesting!
  
  http://imagine.gsfc.nasa.gov/science/objects/pulsars1.html

Question: what is a pulsar?