The FAS Astronomers Newsletter

  • The Discovery of Neptune

    FAS Astronomers Blog, Volume 32, Number 8. Neptune is the only planet to be discovered through mathematical analysis. The orbit of Uranus was determined to be perturbed by an unknown object farther out in the Solar System, which astronomers thought might possibly be a new planet.  In 1792, Jean Delambre published tables of planetary positions. It…

  • The Expanding Universe

    FAS Astronomers Blog, Volume 31, Number 4. This is part 3 of a 5-part series on the Universe (The Visible Universe, The Dark Universe, The Expanding Universe, The Microscopic Universe, and The Multiverse). For a long time, people thought that the universe was static and everlasting. It was here. It had always been here. And…