Astronomers have discovered an unexpected spiral structure in the gas around the red giant star R Sculptoris. Observations using ALMA have revealed an unexpected spiral structure in the material around the old star R Sculptoris. This feature has never been seen before and is probably caused by a hidden companion star orbiting the star (ALMA / ESO / NAOJ / NRAO) “We’ve seen shells around this kind of star before, but this is the first time we’ve...
