Along with Jocelyn Bell Burnell, who else discovered the PSR B1919+21?
PSR B1919+21: PSR B1919+21 is a pulsar with a period of 1.3373 seconds and a pulse width of 0.04 seconds. PSR B1919+21:  Discovered by Jocelyn Bell Burnell and Antony Hewish on November 28, 1967, it is the first discovered radio pulsar. Jocelyn Bell Burnell: Dame Susan Jocelyn Bell Burnell, (born 15 July 1943) is a Northern Irish astrophysicist.
Antony Hewish