Two dead, dancing stars challenge astronomers' expectations
1:05am PDT - July 25th, 2019 dancing with the stars - EngadgetStars still have plenty of surprises despite (or perhaps, because of) advances in astronomy. Researchers using Caltech's Zwicky Transient Facility have discovered a binary white dwarf system 8,000 light-years away, ZTF J1539+5027, where the two dead stars orb…