Dolphin Nebula, also known as Dolphin Head Nebula, Sharpless 308, Sh2-308, RCW 11 and LBN 1052, is a Emission Nebula located in Canis Major Constellation. Dolphin Nebula is located 4530 Light Years from Earth. Dolphin Nebula has a radius of 30 Light Years and is almost at the center of Canis Major. Dolphin Nebula engulfs the Wolf-Rayet star EZ Canis Majoris. Dolphin Nebula was formed around 70000 Years ago by EZ Canis Majoris. Dolphin Nebula is also known as The Cosmic Bubble due to its bubble-like apperance.
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