Runaway star Zeta Ophiuchi collides with an interstellar medium, creating this beautiful arc
Adam Rifkin stashed this in Astronomy Photos
From the article: "Zeta Ophiuchi is a young star, just three million years old, with about 20 times the mass of our Sun." Well, that won't live long by stellar standards, will it.
False color image; I imagine that means a raw image would be comparatively boring, though I'd be curious to see it.
For more info on the star itself: https://en.wikipedia.org/wiki/Zeta_Ophiuchi
A few more Reddit comments: