It does not have visible light of its own, that lite is provided by the shine of the stars in it and or around it.
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)
One possibility is The Helix Nebula [See Link] or NGC 7293, it is a large planetary nebula located in the constellation of Aquarius at a distance of approximately 700 light years from us.
red light from the emission nebula
The nearest supernova, or more correctly supernova remnant is the Vela [See Link]. It occurred around 11 - 12,000 years ago. Not only is it the oldest, but it is also the closest at about 800 light years.
Because nebula, like galaxies, do not have a defining edge, it is difficult to determine the exact size but an estimate is the closest you'll get.However, in this case, the difference is large enough.The Tarantula Nebula is about 15 times larger than the Carina Nebula.Tarantula ~ 1,000 light years acrossCarina ~ 65 light years across.
The Orion nebula is part of our own galaxy (the Milky Way). The Orion nebula is about 1500 light-years away from us. Our galaxy is about 100000 light-years across.
nebula
nebula
Considering the distance to the Cats Eye Nebula is only 3,300 light years away, it is going to be within our own Milky Way Galaxy.
M57, the "Ring Nebula", is in our own Milky Way galaxy, about 2300 light years away.
Emission nebula glow and reflection nebula reflect the light form other stars
The biggest known nebula is Tarantula nebula stands 160,000 light years from us. its wide is 650 light years (1 light years = 10 trillion km)
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)
The Egg Nebula is about 3000 light-years from us.
Depending on the type of nebula, they can range from a light year across to over a 100 light years in diameter.
Depending on the type of nebula, they can range from a light year across to over a 100 light years in diameter.
The crab nebula is estimated to be about 6,300 light year away.