... Neptune is smaller in diameter but larger in mass than Uranus . ... N eptune has been visited by only one spacecraft, Voyager 2 on Aug 25 1989. ... A t the time of the Voyager encounter, Neptune's most prominent feature was the Great Dark Spot (left) in the southern hemisphere. ... Neptune's winds blew the Great Dark Spot westward at 300 meters/second (700 mph). ... L ike Uranus and Jupiter, Neptune's rings are very dark but their composition is unknown. ... Neptune's Ring System . ... Uranus .. ...

Larissa . Neptune VII - 1989N2, 1981N1 . Larissa [LA-ree-suh] is only about 48,800 kilometers (30,300 miles) from Neptune's clouds, and circles the planet in 13 hours, 18 minutes. ... Larissa circles the planet in the same direction as Neptune rotates, and remains close to Neptune's equatorial plane. ... 1989 . ... Mean density (gm/cm^3) . ... The leading side faces forwards in the orbit of Larissa. ... Longitude 0 is at the righthand end of the leading side, and faces Neptune. ...

... An article about Tycho and several pictures of him . ... Probably pretty bad: daily showers were still a few centuries off.. ... A tidbit: Rosencrantz and Guildenstern, the Danish courtiers in Shakespeare's "Hamlet" (and in Tom Stoppard's play " Rosencrantz and Guildenstern are dead") probably got their names from two relatives of Tycho who visited England in 1592 on a diplomatic mission, Frederick Rosenkrantz, 3rd cousin of Tycho, and Knut Gyldenstierne, also a cousin. ...

Cosmic Research, Vol. 42, No. 5, 2004, pp. 435­488. Translated from Kosmicheskie Issledovaniya, Vol. 42, No. 5, 2004, pp. 453­508. Original Russian Text Copyright © 2004 by Veselovsky, Panasyuk, Avdyushin, Bazilevskaya, Belov, Bogachev, Bogod, Bogomolov, Bothmer, Boyarchuk, Vashenyuk, Vlasov, Gnezdilov, Gorgutsa, Grechnev, Denisov, Dmitriev, Dryer, Yermolaev, Eroshenko, Zherebtsov, Zhitnik, Zhukov, Zastenker, Zelenyi, Zeldovich, Ivanov-Kholodnyi, Ignat'ev, Ishkov, Kolomiytsev, Krasheninnikov, Kudela,