Acclaimed Northern Irish astrophysicist Jocelyn Bell Burnell, pictured at the Edinburgh International Book Festival where she talked about her work which included the discovery of the pulsar. The three-week event is the world's biggest literary festival and is held during the annual Edinburgh Festival. The 2011 event featured talks and presentations by more than 500 authors from around the world. (Photo by Colin McPherson/Corbis via Getty Images)

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This Woman’s Stellar Discovery Changed Our Understanding of Space

Jocelyn Bell Burnell first noticed the existence of pulsars in 1967.

A new article in National Geographic profiles Dame Jocelyn Bell Burnell, the scientist who discovered pulsars in 1967 and thus made possible much of what we today know about space and the stars. Pulsars are massive star corpses, and since Burnell’s discovery they have helped scientists study phenomena like gravitational waves and cosmic oceans.

Burnell was a graduate student at the University of Cambridge 51 years ago when her advisor tasked her with building a radio telescope. With the intention of studying quasars, Burnell noticed repeated radio pulses that kept extremely precise time. Those radio pulses were eventually identified as pulsars, which at that point in scientific history were considered hypothetical.

One of the more exciting uses of Burnell’s discovery in the decades since has been a map of pulsars designed to direct potential aliens in Earth’s direction.

“Initially, when you stumble on something new, you’re really working in a fog,” Burnell told National Geographic. “And goodness, haven’t we moved a long way in 50 years?”

Read the full story at National Geographic