Horsehead Nebula

A nebula that looks like its name! Formally SH-308, this bubble of gas 60 light-years across is blown out by a hot Wolf-Rayet star at its center. It’s about 4500 light-years away in the constellation Canis Majoris. It’s quite dim, but if you could see it with bionic vision or something, it would be larger…

The Monkey Head Nebula is located about 6400 light-years away, in the constellation Orion. It’s a gorgeous cloud of gas surrounding a cluster of young stars. I processed this data a couple of different ways; one using the “Hubble palette” and another using my own color scheme. The colors represent different kinds of ionized gases:…

This image contains a few things! At the bottom is the Cone Nebula, at the upper-right is the “Fox Fur Nebula”, and in the middle is the “Christmas Tree” star cluster… you have to flip the image upside down to see that one. It’s a gorgeous region of active star formation in the constellation Monoceros….

Sometimes called the “Cat’s Eye Galaxy,” this is M94 – about 16 million light years away in the constellation Canes Venatici. You can barely see its faint outer ring surrounding it here, as well as several very distant background galaxies. It’s notable for challenging our understanding of the universe – it appears to have very…

Formally NGC1570, the “Northern Trifid” is a combination of an emission nebula (the red parts, which is ionized Hydrogen emitting its own light) and a reflection nebula (the blue parts, which is starlight reflecting off dust.) You can also see hints of the dust surrounding this area, which is difficult to capture under the light-polluted…

This is the Tulip Nebula in Cygnus, but see that shell-like structure just above it, to the right a little? That’s the bow shock wave of Cygnus X-1, a stellar-mass black hole! It’s one of the most powerful X-ray sources in the sky – but don’t worry, our atmosphere protects you from it. 20 hours…