TOGETHER rocky and metallic materials.Comet is visible only when it travels close to the Sun.HALLEY CometHalley was last SEEN in Earth's skies in 1986 and was met in space by an international fleet of spacecraft.It will return in 2061 on its regular 76-year journey around the Sun.The RADIUS of Halley's Comet is 5.5 km.Halley's comet was DISCOVERED in 1758.Comet Halley moves backwards (opposite to Earth's motion) around the Sun in a plane tilted 18 degrees to that of the Earth's orbit.Explanation:So, Halley Comet is seen after 76 yeas from 1986.1986 + 76 = 2062So, it will be seen in 2062.