The Horsehead Nebula is a dark nebula. We can only see it because it is blocking some of the light from the emission nebula behind it and we see it as a silhouette. Bonus:the star in the upper left is partially embedded in the dark nebula creating near it a blue reflection nebula

· · Web · 0 · 9 · 17
Sign in to participate in the conversation

The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!