Uranus in the Sky. Uranus. As seen by Voyager. Uranus Highlights. Accidently discovered in March 1781 by William Herschel Fits Bode ’ s Law! Visited by Voyager 2 in 1986 Suspicious lack of internal heat – probably leads to bland appearance of atmosphere Composition: ~75% H, ~25% he
As seen by Voyager
William Herschel at left discovered Uranus by accident. He used the 6-inch telescope at right, which he built himself.
Caught during a field reversal???
Seasons on Uranus are
a) as long as Uranus' year
c) one fourth of Uranus' year, or about 20 Earth years long
d) four times Uranus' year, or about 320 Earth years long
Unlikely that both Uranus and Neptune are undergoing field reversals at the same time!
How can Uranus and Neptune be so different when so similar in size and mass?
[Inhibition of convection in Uranus?]
Voyager 2 found rings, although there had been previous evidence for them