Oct 162020
According to a new study, Betelgeuse is both smaller and closer than thought…
“Our results say Betelgeuse only extends out to … a radius 750 times the radius of the sun… Our results show it’s a mere 530 light years from us—25 percent closer than previous thought.”
I would have thought that the distance to Betelgeuse would have been determined via parallax. In fact, it was... and the precision that approach gives is pretty fluffy.