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Thor’s Helmet
An interesting emission nebula 30 light years across. Imaged with narrowband filters.

Here’s our solar system in a few billion years.
This is M27, the “Dumbbell Nebula,” about 1600 light-years away. It’s what’s called a planetary nebula – not because it has anything to do with planets, but because early observers confused them for planets. In reality it’s far more interesting. This is what’s left over when a medium-sized star runs out of Hydrogen to fuse,…

The Crescent Nebula
Like the Bubble Nebula, and Thor’s Helmet, this is formed by the fast stellar wind of the extremely hot star at its heart – which interacts in complex ways from the wind left over from when this star was a red giant. This is roughly 5,000 light-years away. These images were taken over the span…

Another Go at the Pelican Nebula
The Pelican Nebula frankly isn’t a very attractive object as a whole, but if you crop it down to its heart, there’s a lot of interesting stuff going on. Look for little puffs in the image, or areas with spikes coming out of them. Those are Herbig-Haro objects – stars that are still in the…

The galaxy M106
The larger galaxy in this image goes only by the boring name “M106”, but it’s anything but boring. About 23 million light-years away, M106 is pretty similar to Andromeda in its size and brightness. But M106 is a lot weirder. In addition to its slightly warped shape, M106 is the home of a giant water-vapor…

Markarian’s Chain
This is actually only a portion of a string of galaxies that make up the Virgo supercluster of galaxies, around 50-60 million light-years away.