Markarian’s Chain

Our new home has clear views of the sky down to about 15 degrees from the horizon; which means some objects that are normally considered only visible from the Southern hemisphere just peek above our trees for a few hours. One such object is the galaxy Centaurus A; it’s an odd galaxy that looks like…

This is a weird little cluster of galaxies – there are four in all, and each one is completely different. There’s a weird, S-shaped one that must have been messed up by its neighbors in the past, a somewhat normal-looking spiral galaxy, and elliptical, and another one that’s viewed edge-on. Galaxies that have interacted with…

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 is an interesting one; it’s large and relatively bright – about the same size as Andromeda. And it’s in a busy part of the sky, within Canes Venatici, with lots of galactic neighbors. This image has been enhanced with Hydrogen emission data; that’s what the red dots and tendrils are. There’s one…

Highlighted here is a recently discovered supernova in the galaxy M61, over 50 million light-years away! This exploding star outshines the entire core of its own galaxy, and many of the much closer stars seen within our Milky Way. The sheer power of this stellar explosion is unfathomable. It’s 50 million light-years away, which means…

I don’t know why the press has latched onto the name “the green comet” for C/2022 E3 (ZTF) – most comets are green, and it’s too dim to see any color at all if you’re viewing it through binoculars or a telescope. But through 2 hours of total exposure time, the colors do emerge, and…