- News Home
17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
- About Us
Twinkle, Twinkle Little Star
9 February 1999 8:00 pm
marks the 31st anniversary of the announcement by British astronomer Antony Hewish of the discovery of pulsars--stars that emit regular bursts of radio waves. At the time, some British tabloids reported that scientists had contacted alien civilizations. Using a radio telescope designed by Hewish to detect radio signals that "twinkle," his colleague, Irish astronomer Jocelyn Susan Bell Burnell, noticed in August 1967 a source that gave off short, regular, rapid bursts of energy--a signal coming from something very small and very far away. Bell Burnell later found other similar signals in the telescope charts. Hewish received the 1974 Nobel Prize in physics for his pioneering contributions to radio astronomy, including his role in the discovery of pulsating stars, which turned out to be neutron stars--the compact, spinning inner cores of stars that had died and exploded as supernovae.
[Source: Emily McMurray, Ed., Notable Twentieth Century Scientists (Gale Research Inc., ITP, 1995)]