It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Curiously, 1st century BC Chinese records unearthed by Shu-ren, Jianmin and Jin-Yi in 1980 refer to the color of Betelgeuse as being white or yellow. However, Ptolemy writing in 150 AD calls it a red star. Therefore, Fang Lizhi, a Chinese astrophysicist, proposed that Betelgeuse could have turned into a red giant star during that period.