Check Out This Incredible X-Ray 'Superbubble' That's Nearly 5,000 Light-Years Wide

The galaxy, with superbubble in pinkish-purple.
The galaxy, with superbubble in pinkish-purple.
Image: X-ray: NASA/CXC/University of Michigan/J-T Li et al.; Optical: NASA/STScI

This incredible image shows a pair of “nuclear superbubbles,” one over 4,900 light-years across and the other over 3,500 light-years. They’re emanating from the center of the galaxy NGC 3079, likely the result of a central black hole consuming matter and spewing it back out.


Or, the superbubbles could be from a starburst, a faster-than-usual stellar birth. The bubble-like shape could come from shock waves and compression within the cooler gas. But there’s still an element of mystery here, as the smaller bubble seems to be emanating synchrotron emission, or high-energy x-rays from spiraling electrons, while the larger bubble isn’t.

As with lots of the wild-looking things happening in space, these bubbles might be a potential source of the high-energy particles called cosmic rays that strike Earth from outer space. They might even be a source of those cosmic rays whose energies are too high to be accelerated by a single supernova, according to the paper published in the The Astrophysical Journal. The energies and locations of the x-rays demonstrate that the particle acceleration occurred at the outer rim of the bubble, rather than at the center of the galaxy.

Illustration for article titled Check Out This Incredible X-Ray 'Superbubble' That's Nearly 5,000 Light-Years Wide
Image: NASA/CXC/University of Michigan/J-T Li et al

Four observations dating back to 2001 were needed to capture the x-ray portion of this image with the Chandra X-ray Observatory, totaling nearly 36 hours of observation time.

If you were looking at NGC 3079 directly with your human eyes, it wouldn’t look anything like the image at top. The whole exposure combines 35 hours of observation time, and the x-ray frequencies (observed by Chandra) are rendered in purple and pink, while the visible light frequencies (observed by Hubble) are rendered in red and blue. This is typical of how these sorts of space images are processed for the public. Rather than be mad at those who created the image for deceiving you, you should be mad at the forces of evolution for making human eyes too limited to capture the full extent of the amazing things happening in space.

This set of observations might capture where the high-energy emissions stem from, but they leave lots of questions unanswered, like why synchrotron emission is emitted from the bottom bubble but not the top. Figuring that out, and gaining further insights into how they form, will be up to future telescope campaigns.


Former Gizmodo physics writer and founder of Birdmodo, now a science communicator specializing in quantum computing and birds


Dr Emilio Lizardo

In all your travels, have you ever seen a star go supernova? ...

I have. I saw a star explode and send out the building blocks of the Universe. Other stars, other planets and eventually other life. A supernova! Creation itself! I was there. I wanted to see it and be part of the moment. And you know how I perceived one of the most glorious events in the universe? With these ridiculous gelatinous orbs in my skull! With eyes designed to perceive only a tiny fraction of the EM spectrum. With ears designed only to hear vibrations in the air. ...

I don’t want to be human! I want to see gamma rays! I want to hear X-rays! And I want to - I want to smell dark matter! Do you see the absurdity of what I am? I can’t even express these things properly because I have to - I have to conceptualize complex ideas in this stupid limiting spoken language! But I know I want to reach out with something other than these prehensile paws! And feel the wind of a supernova flowing over me! I’m a machine! And I can know much more! I can experience so much more. But I’m trapped in this absurd body! And why? Because my five creators thought that God wanted it that way!