Check out our latest paper! Short thread below. How to "fix the BMS frame" of the gravitational-wave predictions co… https://t.co/eQCZgKRWmf
A mathematical device used by Einstein to keep the Universe from falling in on itself. He later called this his "greatest blunder", because it kept him from predicting the expansion of the Universe. Astrophysicists now believe there may be a use for the cosmological constant.