NASA Scientist Discovers Oldest White Dwarf Star With Puzzling Rings
J0207 is located around 145 light years away in the constellation Capricornus. White dwarfs slowly cool as they age, and Debes's team calculated J0207 is about three billion years old, based on a temperature just over 5,800 degrees Celsius.
The oldest, coldest white dwarf known to be surrounded by a ring of dusty debris.
Related
................................ Advertisement ................................