Space Diamond: Astronomers Spot Coldest White Dwarf 900 Light-years Away

Astronomers have discovered the coldest white dwarf around 900 light-years away from Earth. The white dwarf star, about 11 billion years old, and is believed to be composed mostly of crystallized carbon, making it a diamond in the sky. Astronomers from the University of Wisconsin-Milwaukee, led by David Kaplan, used the National Radio Astronomy Observatory's (NRAO) Green Bank Telescope and Very Long Baseline Array to discover the coolest and faintest white dwarf star to date. The research was pu...