A team of scientists from UK and Germany used a 42-ft telescope at the Jodrell Bank Observatory in Cheshire, England, to determine how the magnetic field structure and rotation of a powerful pulsar in the center of the famous Crab Nebula evolves with time. This composite image shows the Crab Nebula. The Crab pulsar is in the center of the image. Image credit: X-ray – NASA / CXC / ASU / J. Hester et al.; optical – NASA / HST / ASU / J....