Andromeda Galaxy: nearest neighboring major galaxy to our "Milky Way Galaxy". Due to begin a collision with our Milky Way galaxy in about billion years, Andromeda is million light years away from Earth (at the speed of light).
This image from Nasa's Spitzer Space Telescope shows a stellar nursery containing thousand of young stars & developing protostars near the sword of the constellation Orion. I heart the Spitzer space telescope.
The Trifid Nebula is an H II region located in Sagittarius. Its name means 'divided into three lobes'. The object is an unusual combination of an open cluster of stars; an emission nebula, a reflection nebula and a dark nebula