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Gamma-Ray Astronomy

The study of the most energetic wavelength, or frequency, of electromagnetic radiation. Gamma-rays have wavelengths smaller than 10^-11 meters and frequencies greater than 10^20 Hz. They can be quite harmful to life because they are strong enough to ionize atoms and thus destroy cells. Fortunately, Earth’s atmosphere shields us from most astronomical gamma-ray radiation.

Radio Programs

Dark Downtown? The glow of the galaxy’s busy downtown August 16, 2016

Gamma-Ray Bursts The long and short of gamma-ray bursts April 18, 2016

Fermi Bubbles Blowing bubbles in the Milky Way July 19, 2015

African Astronomy III Blue flashes from the distant universe March 26, 2015

WIMP-y Glow Bright evidence of dark matter July 29, 2014

VERITAS Sparks from extreme cosmic environments November 8, 2012

Namibian Astronomy II Strange eyes on the gamma-ray sky November 7, 2012

Explorer 11 A first glimpse of the universe April 26, 2011

Compton Observatory One of the great ones April 4, 2011

Lightning Shows III Firing beams of antimatter March 22, 2011

Lightning Shows II Dangerous outbursts from big storms March 21, 2011

Featured Images

Artist's concept of Fermi bubbles

Blowing Bubbles July 20, 2015

X-ray view of a gamma-ray burst

Zapping Earth March 26, 2013

HESS telescopes in Namibia, which study the gamma-ray universe

Extreme Telescope November 8, 2012