Spectacular Telescope Image Shows 'Ghostly' Aftermath of Giant Star's Death
But this stellar ghost isn't scary. It's stunning.
Monisha RavisettiFormer Science Writer
Monisha Ravisetti was a science writer at CNET. She covered climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical thought experiments.
Previously, she was a science reporter with a startup publication called The Academic Times, and before that, was an immunology researcher at Weill Cornell Medical Center in New York. She graduated from New York University in 2018 with a B.A. in philosophy, physics and chemistry.
When she's not at her desk, she's trying (and failing) to raise her online chess rating. Her favorite movies are Dunkirk and Marcel the Shell with Shoes On.
It's a whopping 554 million-pixel image that paints a cosmic marvel, called the Vela supernova remnant, in translucent lavenders, piercing pale blues and stringy sunset colors. In the spirit of Halloween, might I remind you that a supernova remnant isn't just the leftover corpse of a star. It's sort of the equivalent of chopping up that corpse and sprawling its pieces across space.
Sparkly guts everywhere.
Technically, this scene is composed of several observations produced by a wide-field camera dubbed OmegaCAM, which has a staggering 268-million-pixel capacity. Various filters on the device are what allow the image's beautiful hues to shine through -- four were used on Vela specifically to create a color scheme of magenta, blue, green and red.
To be clear, this means the image is colorized. Out in space, the remnant probably doesn't quite look so rainbow-like. It's just easier to parse through different astronomical aspects of space pics when we have some colorful dividers. But what isn't technologically enhanced is the way Vela -- named for a southern constellation which translates to "The Sails" -- structurally looks.
Those almost-3D bubbles of dust and gas are real. Every diaphanous streak is expected to be accurate. And the story this tells of the giant star's ultimate demise is, presumably, true.
Nevertheless, if you ask me, this ghost isn't quite so scary. It's stunning.
It's one of our universe's mind-bending creations
About 11,000 years ago, a massive star died and unleashed a powerful explosion that caused its outermost layers to shock wave into surrounding gas in the region.
That disturbed gas, over time, compressed and created the threaded structures we see in the image. Plus, whatever energy was released during the event forced spots to shine brightly, casting an ethereal glow over the entire landscape.
As for the dead star itself, the root of this detonation, it's now a neutron star -- a stellar body so unimaginably dense that one tablespoon of it would equal something like the weight of Mount Everest. ESO also explains that this particular neutron star happens to be even more extreme than the average one.
It's a pulsar, meaning it spins on its own axis more than 10 times every second. I don't even want to think about how many times it has spun since I started writing this article.
And "at only 800 light-years away from Earth," ESO said in a press release on the image, "this dramatic supernova remnant is one of the closest known to us." But because one light-year denotes the distance light can travel in the span of one year, I wouldn't quite say it's traversing our cosmic backyard.
I mean, not that I'd care if we could physically see this beautiful "ghost" from here on Earth -- of course, assuming its radiation (and other hazardous material) doesn't haunt us before we get a glimpse.