The Horsehead Nebula

After 23 years on the job, the Hubble Space Telescope is still taking some amazing pictures. Here's one that was featured in yesterday's APOD:

See the link for a full size version of the image, and for the caption that explains it all. The short version is that this is a composite image of the Horsehead Nebula, with infra-red and visible light represented.

Happy Twenty-Third, Hubble.