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If the Sun were a pumpkin one foot in diameter, Neptune would be a plum
about 3225 feet away. Neptune circles the sun every 164.785 Earth years.
(SFEC, 4/30/00, Par p.9)(SFC, 12/9/00, p.B3) 1613
Jan 28, Galileo may have unknowingly viewed the
undiscovered planet Neptune.
1811 Mar 11, Urbain Jean Joseph le
Verrier, co-discoverer (Neptune), was born.
1846 Sep 23, The planet Neptune
was discovered by German astronomer Johann Gottfried Galle. Neptune was
discovered after John Couch Adams of England and Urbain Jean Leverrier
of France independently figured out where it should be.
(HFA, ‘96, p.38)(AP, 9/23/97)(SFEC, 5/30/99, Par
p.13)(ON, 9/01, p.9)
1846 Oct 10, Neptune's moon Triton
was discovered by William Lassell. [see Sep 23]
1979 Jan 21, Neptune became the
outermost planet as Pluto moved closer due to their highly elliptical
1983 Jun 13, The US space probe
Pioneer 10, launched in 1972, became the first spacecraft to leave the
solar system as it crossed the orbit of Neptune.
(AP, 6/13/97)(HN, 6/13/98)
1989 Aug 2, NASA confirmed Voyager
2's discovery of 3 more moons of Neptune designated temporarily
1989 N2 (Larissa), 1989 N3 (Despina) and 1989 N4 (Galatea).
1989 Aug 21, The US space probe
Voyager 2 fired its thrusters to bring it closer to Neptune's
mysterious moon Triton.
1989 Aug 24, Voyager II passed
within three thousand miles of Neptune sending back striking
1989 Aug 25, NASA scientists
received stuning photographs of Neptune and its moons from Voyager 2.
1989 Aug 27, Chuck Berry performed
his tune Johnny B. Goode for NASA staff in celebration of Voyager II's
encounter with the planet Neptune.
1989 Nov 12, A triple conjunction
of Neptune and Saturn took place.