Astronomers use the principle of parallax to measure distances to the closer stars. Here, the term parallax is the semi-angle of inclination between two sight-lines to the star, as observed when the Earth is on opposite sides of the Sun in its orbit.
Ernest Rutherford discovered that atoms contain mostly empty space, with his gold foil experiment. Bhor discovered that the electrons are not randomly placed around the nucleu â¦ s.
Uranus was officially discovered by Sir William Herschel in 1781: It is too dim to have been seen by the ancients. At first Herschel thought it was a comet, but several years later it was confirmed as a planet.Herscal tried to have his discovery named âGeorgian Sidusâ after King George III.acts about Uranus. Uranus was officially discovered by Sir William Herschel in 1781: It is too dim to have been seen by the ancients. At first Herschel thought it was a comet, but several years later it was confirmed as a planet. Herscal tried to have his discovery named âGeorgian Sidusâ after King George III.