The bubbling surface of a distant star was captured on video for the 1st time ever

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The bubbling surface of a distant star was captured on video for the 1st time ever


Astronomers have gotten the first-ever detailed views of turbulent activity in a star other than our own sun.

A time-lapse video released Wednesday (Sept. 11) shows enormous gas bubbles roiling on a nearby star called R Doradus, a red giant about 300 times bigger than our sun that lies roughly 180 light-years away, in the southern constellation Dorado. Like a boiling soup on a stovetop, the star’s scorching material erupts on its surface in bubbles, which astronomers estimate swell to a whopping 75 times our sun’s size.

“It is spectacular that we can now directly image the details on the surface of stars so far away,” Behzad Bojnodi Arbab, a doctoral student at the Chalmers University of Technology in Sweden and a co-author of a new study about the observations, published Wednesday in the journal Nature, said in a statement. Thanks to the latest images, astronomers can now “observe physics that until now was mostly only observable in our sun,” Arbab added. 

These best-yet images of the nearby star R Doradus show giant plasma bubbles 75 times bigger than our sun rising and sinking on its surface. (Image credit: ALMA (ESO/NAOJ/NRAO)/W. Vlemmings et al.)

The video is pieced together from the best-ever images of the star’s chaotic surface, which were captured by a network of radio telescopes in Chile called the Atacama Large Millimeter/submillimeter Array, or ALMA for short. The images show the plasma bubbles, which are driven by heat rising from the star’s core, crashing on its surface so violently that they appear to slightly deform the star.

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