List of articles in "Planet" category - Page 1178

Halley’s Comet or Comet Halley (/ˈhæli/ or /ˈheɪli/) officially designated 1P/Halley is the best-known of the short-period comets and is visible from Earth every 75–76 years Halley is the only […]

Metis (/ˈmiːtɨs/ MEE-təs; Greek: Μήτις) also known as Jupiter XVI is the innermost moon of Jupiter. It was discovered in 1979 in images taken by Voyager 1 and was named […]

Saturn is the sixth planet from the Sun and the second largest planet in the Solar System after Jupiter. Named after the Roman god of agriculture its astronomical symbol (♄) […]

Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. Uranus is similar in composition to Neptune and […]

Pluto (minor-planet designation 134340 Pluto) is the largest object in the Kuiper belt and the tenth-most-massive body observed directly orbiting the Sun. It is the second-most-massive known dwarf planet after […]

Triton is the largest moon of the planet Neptune discovered on October 10 1846 by English astronomer William Lassell. It is the only large moon in the Solar System with […]

Callisto /kəˈlɪstoʊ/ (Jupiter IV) is a moon of the planet Jupiter. It was discovered in 1610 by Galileo Galilei. It is the third-largest moon in the Solar System and the […]

Europa /jʊˈroʊpə/ (Jupiter II) is the sixth-closest moon of the planet Jupiter and the smallest of its four Galilean satellites but still the sixth-largest moon in the Solar System. Europa […]

Jupiter is the fifth planet from the Sun and the largest planet in the Solar System. It is a gas giant with mass one-thousandth of that of the Sun but […]

433 Eros is an S-type near-Earth asteroid approximately 34.4×11.2×11.2 kilometres (21.4×7.0×7.0 mi) in size the second-largest near-Earth asteroid after 1036 Ganymed. It was discovered in 1898 and was the first […]