00:00The Sun is massive. However, it looks tiny compared to the central star in a system 180
00:09light-years away. Its red giant star, called Arduratus, is around 350 times the width of
00:15the Sun and it is in its final stages of life. However, what's even wilder is that the surface
00:20of that star is bubbling. And astronomers have recently calculated that those bubbles
00:24are gargantuan as well. Researchers say the boiling bubbles of Arduratus are some 75 times
00:30the size of our Sun. So why are there bubbles? A star's heat is generated inside at its core,
00:36with that heat then moving outward to its surface via convection. Our Sun does this too,
00:40but its bubbles are much smaller, only around 620 miles across, or just smaller than the state
00:45of Texas. Astronomers say simply observing these bubbles is something that is blowing their minds
00:50as well, with one of the researchers saying about it,
00:52we had never expected the data to be such high quality that we could see so many details
00:57of the convection of the stellar surface.
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