Lagoon Nebula, also known as Messier 8, M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72, is a Interstellar Cloud located inside The Sagittarius Constellation. Lagoon Nebula is 4100 Light Years from Earth. Sharpless 25 has a radius of 55 Light Years. The Lagoon Nebula was discovered a little before 1654 by Italian Astronomer Giovanni Hodierna.
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