Astronomers Find Earth-Sized Planet Orbiting Alpha Centauri B

Artist’s concept of the newly-discovered planet, Alpha Centauri Bb, in orbit around its parent star, with Alpha Centauri A visible at bottom left and our Sun at upper right. The discovery was made by tracking perturbations in Alpha Centauri B’s movements as small as a baby’s crawl…an astonishing accomplishment when one considers that the […]