Astronomy  /  News  /  Two-Faced Star Exposed
This artist's concept shows the two-faced white dwarf nicknamed Janus. The blue-tinted dead cinder of a star, which was once a star like our sun, is composed primarily of hydrogen on one side and helium on the other (the hydrogen side appears brighter).

Two-Faced Star Exposed

July 19, 2023
Unusual white dwarf star is made of hydrogen on one side and helium on the other