A Peek at the Glowing Red Shell Around an Aging Star
(World News Science)

About 2,700 years ago, a distant star in our galaxy expelled a bunch of material at high speed, creating a thin shell around itself. Now, thanks to powerful telescopes, astronomers can take a picture of it. U Antliae, one of the members of the constellation Antlia, is located in the southern hemisphere of the sky. U Antliae is a carbon star, which means its atmosphere contains more carbon than oxygen. As the star has aged, carbon has given it...