Astronomy Picture of the Day
Discover the cosmos! Each day we feature a different image or photograph
of our fascinating universe, along with a brief explanation written by a
October 29, 1995
Radioactive Clouds in the Milky Way
Compton Gamma Ray Observatory,
When massive stars explode
they create large radioactive
blast clouds which expand into interstellar space.
As the radioactive elements decay, they produce
gamma-rays. Possible locations of these stellar explosions
known as supernovae,
are indicated by the bright clumps
in this map of the central regions of our Milky Way Galaxy.
The map was made by a telescope onboard NASA's orbiting
Compton Gamma Ray Observatory
using detectors sensitive to
gamma rays from the decay of radioactive aluminum.
Tomorrow's picture: Update on Comet Hale-Bopp
Authors & editors:
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