9 years ago
M4 (NGC 6121)
M4 is a globular cluster in the constellation Scorpius. It is fairly close to us at about 7000 light years and is home to many white dwarfs as well as a planet, PSR B1620-26 b.
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Color composite from Digitized Sky Survey 2 showing M4, NGC 6144 in the upper left, glowing red hydrogen clouds and Sigma Scorpii in the upper right.
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PSR B1620-26 b
Info on the planet found within M4. -
Messier Object 4
Everything you wanted to know about M4 but were afraid to ask. -
Ancient Orbs
Close up of the center of M4.
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