Astronomers have found a third planet circling a pair of stars in the Kepler 47 system.
A massive star lost most of its mass before exploding and creating a neutron star — and a second nearby neutron star might have been the thief.
Revised data changed expectations for a star pair that was supposed to merge in 2022.
In a News Note (S&T: November 2004, page 16) you described WR 20a, a binary star in Carina with components of 83 and 82 solar masses and an orbital period of 3.686 days. How can two huge balls of gas move so fast? Grab any introductory astronomy textbook and turn…