The Cone Nebula is a turbulent star-forming pillar of gas and dust. It's 7 light-years long, but this image taken by Hubble in 2002 shows the top 2.5 light-years (which equals 23 million round trips to the moon). Ultraviolet radiation causes the hydrogen gas to emit an eerie red glow.
This 2018 Hubble image shows the Lagoon Nebula, a chaotic nursery full of baby stars. At the center of this image, a young star 200,000 times brighter than our sun blasts out ultraviolet radiation.