betelgeuse still dimming
They're caused by differences in magnetic activity. "The two scenarios we are working on are a cooling of the surface due to exceptional stellar activity or dust ejection towards us," said ESO scientist Dr Miguel Montargès. As you can see in the before-and-after images above, Betelgeuse was more or less spherical about a year ago.
Near the end of 2019, astronomers watching the red giant Betelgeuse noted how much the star had dimmed, continuing to steadily fade for months. WIRED Media Group
Do you have a story for The Sun Online Tech & Science team? CNMN Collection What in the world could be going on here?
Do you think the star will explode? By December, it was most decidedly not. Astronomers observing Betelgeuse, a red supergiant star, had been puzzled by its mysterious dimming.
For further details of our complaints policy and to make a complaint please click here. "Betelgeuse has been a beacon in the night sky for stellar observers but it began to dim late last year," the team wrote on Friday. Supernovae are triggered when a star burns through enough of its hydrogen to cause its core to collapse.
These two images show the difference in the star's brightness in January and December 2019, Betelgeuse is expected to explode in a few thousand years' time, This December 2019 image shows dust clouds (orange) emitted from Betelgeuse (black).
Let us know in the comments... We pay for your stories! Sun spots are simply cooler portions on the Sun's surface where less of the hot, internal material makes it to the upper levels of the Sun. The Sun website is regulated by the Independent Press Standards Organisation (IPSO). Because Betelgeuse is so large and so close, it's actually possible to resolve some details of its surface rather than simply seeing it as a point source of light. Like all supergiants, it will eventually go supernova.
For other inquiries, Contact Us. That means the star has only a tenuous gravitational grip on some of its outer layers, which have a lot of heavier elements in them due to Betelgeuse's advanced age. Of course, there's also the possibility that some process we're completely unaware of is happening, which would be even more interesting.
Your California Privacy Rights | Do Not Sell My Personal Information So when the star started dimming late last year, speculation rose that the show was about to start. The bright stellar speck Betelgeuse has been mysteriously "dimming" for months and astronomers recently released new photos of the doomed star.
Betelgeuse's strange, periodic dimming has puzzled stargazers for thousands of years, but made headlines over the last year when it started to dim dramatically in … Our journalists strive for accuracy but on occasion we make mistakes.
"Such variability is likely just normal behaviour for this famously variable supergiant, but the recent dimming has rekindled discussion on how long it may be before Betelgeuse does go supernova.".
Found in the constellation of Orion, it's large enough and close enough that when it's destroyed in an inevitable supernova, it will put on a spectacular light show for anyone who happens to be on Earth to see it. Some astronomers have used the Very Large Telescope at the European Southern Observatory to do just that, and they've found something extremely weird: Betelgeuse's dimming isn't even.
From Earth's perspective, one of the brightest stars in the sky is the red supergiant Betelgeuse.
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