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A Galactic Cloud of Antimatter (APOD 01 May 1997)

Posted: Sat Mar 31, 2007 9:13 am
by harry
Hello All

Just looking back on old images
A Galactic Cloud of Antimatter May 1, 1997

http://antwrp.gsfc.nasa.gov/apod/ap970501.html

Somehow I must have missed this image.

It looks fantastic.
The center of our Milky Way Galaxy is full of surprises. Its latest spectacular is a mysterious cloud glowing in gamma rays produced by annihilating antimatter particles! Star Trek fans are all too familiar with the consequences of mixing matter (electrons) and antimatter (positrons) - the particles catastrophically annihilate converting their masses to energy according to Einstein's famous E=mc2. Positron/electron annihilation energy is emitted as gamma rays with photon energies of 511,000 electron volts