Seaborg's team suggested the name plutonium for the new element, in honor of the planet Pluto. The two elements just before plutonium in the periodic table had also been named for planets: uranium for Uranus and neptunium for Neptune. Glenn Seaborg later went on to find a number of othe...
(Uranium, the element before neptunium, had been named for the planet Uranus.) Physical and chemical properties Neptunium is a silvery white metal with a melting point of 640°C (1,180°F) and a density of 20.45 grams per cubic centimeter. Chemical properties Neptunium is fairly ...
Blue planet earthOur time is upFor what it's worthGoing down in flamesWe cheer the puppeteerFull blown chaosPandemoniumUp UranusAdios amigosLast call on planet fuckedYou trade on the bones of lost memoriesEver spiraling down without hopeWithout ceaseRampage turmoilThe iceberg's tipThe rats have ...
when the Pioneer 11 spacecraft, followed by Voyager 1 and Voyager 2, discovered the presence of aurora-like light shows reminiscent of those on Earth on Jupiter, Saturn, Uranus, and Neptune. The launch of the Hubble Telescope in 1990 revealed even more about these celestial events, and ...