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
Daniel K. Inouye Solar Telescope Daniel K. Inouye Solar Telescope The Daniel K. Inouye Solar Telescope (DKIST), is a scientific facility for studies of the sun under construction at Haleakala Observatory on the Hawaiian island of Maui named after Daniel K. Inouye, a US Senator for Hawaii. With a planned completion date of 2019, it is expected to become the world's largest solar telescope sporting a 4-meter aperture. The DKIST is funded by National Science Foundation and managed by the National Solar Observatory. Until 2013 it was known as the Advanced Technology Solar Telescope (ATST). It is a collaboration of numerous research institutions. The DKIST