© NASA/HST/CXC/ASU/J. Hester et al.
The Crab Nebula.
Dame Jocelyn Bell Burnell gave the Helen Sawyer Hogg Lecture at the RASC General Assembly on June 30, 2012, entitled "Will the world end in 2012? The astronomical evidence". Burnell is a British astrophysicist who discovered the first radio pulsars with her then thesis supervisor Antony Hewish.