The following table summarizes the radius, mass, distance from the planet center, discoverer and the date of discovery of each of the moons of Neptune: Moon#Radius(km)Mass(kg)Distance(km)DiscovererDate Naiad III 29 ? 48,000 Voyager 2 1989 Thalassa IV 40 ? 50,000 Voyager 2 1989 Desp...
The Discovery A planet that could resemble a smaller version of our own Neptune orbits one of two Sun-like stars that also orbit each other. The planet dwells in the “habitable zone,” with a potentially moderate temperature, and poses a challenge to prevailing ideas of planet for...
Year of Discovery2002 DiscovererMatthew J. Holman, John J. Kavelaars, Tommy Grav, Wesley C. Fraser, and Dan Milisavljevic TypeMoon Mass164,853,527,640,691,000 kg Density (g/cm^3)1.5 Volume (km^3)113097 Radius (Size)30.00 km
From its discovery in 1846 until the discovery of Pluto in 1930, Neptune was the farthest-known planet. When Pluto was discovered, it was considered a planet, and Neptune thus became the second-farthest-known planet, except for a 20-year period between 1979 and 1999 when Pluto's elliptical ...
Facts and Figures Year of Discovery1846 DiscovererW. Lassell TypeMoon Mass21,394,990,550,895,500,000,000 kg Density (g/cm^3)2.059 Volume (km^3)10384058491 Radius (Size)1353.00 km Equatorial Radius (km)1353.00 Escape Velocity (km/h)5,229 ...