“It doesn’t seem to be a mere chance alignment,” she said. Another explanation is the existence of cosmic strings, hypothetical “defects” in the fabric of the universe that could cause matter to clump along large-scale faultlines.ĭr Jenny Wagner, a cosmologist at the Bahamas Advanced Study Institute & Conferences, described the discovery as significant. One possibility is a type of acoustic wave in the early universe, known as baryonic acoustic oscillations, that could give rise to spherical shells in the arrangement of galaxies today. The structure appears as an almost perfect ring on the sky, but further analysis revealed it has more of a coil shape, like a corkscrew, which is aligned face-on with Earth.Ĭosmologists are unsure what mechanism could have given rise to the structure. Lopez and colleagues used several different statistical algorithms to identify potential large-scale structures and the Big Ring emerged. These objects are so bright that they can be seen from billions of light years away and act like giant, distant lamps, illuminating intervening galaxies that their light passes en route and which otherwise would go unseen. The Big Ring was discovered by analysing data from the Sloan Digital Sky Survey (SDSS), a catalogue of distant quasars. As a maximum we need a completely new theorem of cosmology.” “These oddities keep getting swept under the rug, but the more we find, we’re going to have to come face-to-face with the fact that maybe our standard model needs rethinking,” said Lopez. Intriguingly, the two structures are at the same distance from Earth, near the constellations of Boötes the Herdsman, raising the possibility that they are part of a connected cosmological system. Cosmologists calculate the current theoretical size limit of structures to be 1.2bn light years, but the Big Ring and the Giant Arc, which spans an estimated 3.3bn light years, breach this limit. Others include the Giant Arc, which appears just next to the Big Ring and was also discovered by Lopez in 2021. Yet the Big Ring is one of a growing list of unexpectedly large structures. Zooming out on the universe should, in theory, reveal a vast, featureless expanse. “We could expect maybe one exceedingly large structure in all our observable universe.” “From current cosmological theories we didn’t think structures on this scale were possible,” said Alexia Lopez, a PhD student at the University of Central Lancashire, who led the analysis. This states that above a certain spatial scale, the universe is homogeneous and looks identical in every direction. We're excited to share this new streaming experience with you, which puts all of your favorite content from across our brands at your fingertips, and we hope you like it as much as we do.The observations, presented on Thursday at the 243rd meeting of the American Astronomical Society in New Orleans, are significant because the size of the Big Ring appears to defy a fundamental assumption in cosmology called the cosmological principle. Then, sign back in again by selecting your cable or satellite provider and entering those credentials. Simply sign out of the GO app, by selecting the ‘unlink’ button. For your first sign-in, you'll also need to re-authenticate your TV provider. Don't worry you'll just need to manually update the app to the most recent version. You may be receiving an error to ‘update’ or ‘restart’ the app on your device. It's a one-stop-shop for logging in and watching shows from our various networks. This means that you can sign in to one of our GO apps with your TV provider and gain access to our other branded GO apps without having to open each one separately. The sign-in process has been streamlined, and you no longer need to download each GO app separately. To improve our viewers' experience across our brands, our Discovery family of networks recently launched an all-inclusive version of our GO apps.
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