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
Radio Solar Telescope Network communications in countries throughout the world. The observatories are operated by detachments of the 2nd Weather Group, as follows: The RSTN is complemented in its real-time capability by a radio telescope operated from 25 MHz (the ionospheric cutoff) to 1,800 MHz by the Ionospheric Prediction Service at the Paul Wild Observatory in Culgoora, New South Wales, Australia. Radio Solar Telescope Network The Radio Solar Telescope Network (RSTN) is a network of solar observatories maintained and operated by the 557th Weather Wing, ACC. The RSTN consists of ground-based observatories in Australia, Italy, Massachusetts, New Mexico and Hawaii. It became apparent in