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
Goode Solar Telescope former, and founding director of NJIT's Center for Solar-Terrestrial Research and the principal investigator of the facility. Goode conceived, raised the funds, and assembled the team that built and commissioned the telescope, which is the highest resolution solar telescope in the world and the first facility class solar telescope built in the U.S. in a generation. The GST is capable of observing the Sun in visible to near-infrared wavelengths and features a 1.7-meter primary mirror in an off-axis Gregorian configuration that provides a 1.6-meter clear, unobstructed aperture. Adaptive optics correct for atmospheric schlieren in the solar image known as astronomical