Bet

Its story

Beta Coronae Australis is an orange giant that has burned through the hydrogen in its core and swollen to 39 times the Sun's diameter. It shines with more than 600 solar luminosities and carries a rare abundance of cyanogen in its atmosphere—a chemical fingerprint that marks it as a CN star to spectroscopists. It crowns the small southern arc the ancients called the Southern Crown, 474 light-years away.