Here are some cool nebula pictures taken by the Hubble Space Telescope.
This is a cool picture of the Omega Nebula, which is also known as the Swan Nebula, or M 17. It’s located in the constellation Sagittarius, located about 5,000 light-years from Earth.
This is picture of the Cat’s Eye Nebula, a planetary nebula in the constellation Draco. This used to be a star similar to our Sun, but then it died and became a white dwarf, puffing off its outer layers into space.
This is the Carina Nebula, a star forming nebula in the Carina Constellation. It holds Eta Carinae, one of the most massive stars ever discovered, which is expected to detonate as a supernova in the next few hundred thousand years.
This is the Bubble Nebula, also known as NGC 7635. This nebula glows because of a hot central star that’s providing radiation and exciting the nebula atoms.
This is a picture of the Trifid Nebula taken by the European Southern Observatory. This nebula was cataloged M 20 by Charles Messier as part of his famous catalog. It’s called the “Trifid Nebula”, because it appears to be broken up into three parts.
We have recorded an entire episode of Astronomy Cast that’s just about nebulae. Listen here, Episode 111: Nebulae.