The biggest known nebula is Tarantula nebula stand 160,000 light years from us. its wide is 650 light years (1 light years = 10 trillion km)
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The Tarantula Nebula, also known as 30 Doradus, is one of the largest and most active star-forming regions in our nearby universe. It is located in the Large Magellanic Cloud galaxy, around 160,000 light years away from Earth. The Tarantula Nebula is roughly 1,000 light years in diameter.
The nebula you are referring to is likely the Swan Nebula, also known as the Omega Nebula. It is a famous emission nebula located in the constellation Sagittarius. The name "Swan Nebula" comes from its resemblance to a swan when viewed in certain images.
The Nebula Theory is also known as the Solar Nebula Theory. It is a widely accepted model for the formation of our solar system.
The Helix Nebula is a planetary nebula located in the constellation Aquarius, while the Ring Nebula is a planetary nebula located in the constellation Lyra. The Helix Nebula appears more like a disk or helix shape, while the Ring Nebula appears as a ring or donut shape due to its orientation.
protostar or nebula
A nebula is a vast cloud of gas and dust in space. A solar nebula specifically refers to the cloud of gas and dust from which our solar system formed around 4.6 billion years ago.