Discovery and exploration of the Solar System Domenico Cassini later discovered four more moons of Saturn and the Cassini division in Saturn's rings. Edmond Halley realised in 1705 that repeated sightings of a comet were recording the same object, returning regularly once every 75–76 years. This was the first evidence that anything other than the planets orbited the Sun. Around this time (1704), the term "Solar System" first appeared in English. In 1781, William Herschel was looking for binary stars in the constellation of Taurus when he observed what he thought was a new comet. Its orbit revealed that it was a new planet, Uranus, the first
A Beautiful Planet star about half the size and mass of the Sun which lies in the direction of the constellation Cygnus, about 500 light-years away. The number "186" in the planet's name refers to the order in which its planetary system was discovered while scientists processed all of the data produced by the Kepler Space Telescope, and the planet itself is designated "f" because the first planet to be discovered in the system is designated as planet "b," the second discovered is "c," etc., and it was the fifth planet to be discovered. Even though the idea of interstellar travel to another