Cosmic Rays

High-energy particles that fly through the universe at close to the speed of light. Cosmic rays are mostly bare protons and electrons. Some probably are blasted into space from exploding stars, while others may come from the disks of material that encircle the supermassive black holes in the centers of galaxies.

Radio Programs

Rare Elements Creating elements between the stars Tuesday, August 13, 2013
Anti-Discovery The possible signature of dark matter Wednesday, June 26, 2013
On Station New “eyes” for the space station Monday, June 24, 2013
At the Edge At the edge of the solar system Saturday, June 8, 2013
Muons Zapped by a supernova Monday, April 29, 2013
Balloon Ride Taking a balloon ride for science Saturday, April 7, 2012
Cosmic Nobel Discovering a mysterious cosmic energy Sunday, December 11, 2011
Interstellar Skies Looking for clear interstellar skies Tuesday, November 15, 2011
Luis Alvarez Subatomic particles and dead dinosaurs Monday, June 13, 2011
Dangerous Space One of the hazards of space travel Thursday, December 16, 2010
Quiet Sun The Sun stays unusually calm Saturday, August 21, 2010
IceCube, Part IV Planning for a remote environment Friday, January 15, 2010
IceCube, Part III Probing the distant universe Thursday, January 14, 2010
IceCube, Part II Digging into a cosmic mystery Wednesday, January 13, 2010
Fermi Looking into a hidden universe Friday, October 30, 2009

Featured Images

Alpha Magnetic Spectrometer aboard the International Space Station
Magnetic Personality Wednesday, June 26, 2013
Victor Hess prepares to ascend in a balloon to study cosmic rays, 1912
Radiation Hunter Saturday, April 7, 2012
Alpha Magnetic Spectrometer-2 attached to the International Space Station
On Duty Monday, May 23, 2011
Space shutle Endeavour launches on its final mission, June 16, 2011
Final Endeavour Monday, May 16, 2011

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