January 24 – Voyager 2 at Uranus

1986: Voyager 2 makes its closest approach to Uranus.  The seventh planet from the Sun was reached after a journey lasting more than eight years.  It was a great success, discovering ten new moons, and two new rings.

Three new Uranian moons discovered by Voyager 2 (image credit: NASA)

Three new Uranian moons discovered by Voyager 2 (image credit: NASA)

The moons shown in the above photograph are Portia, (1986/U1), Cressida (1986/U3), and Rosalind (1986/U4).

The rings of Uranus, viewed from Voyager 2 (image credit: NASA)

The rings of Uranus, viewed from Voyager 2 (image credit: NASA)

It isn’t clear whether the rings of Uranus were known prior to 1977 when they were discovered by Elliott, Dunham & Mink. William Herschel had reported seeing them almost 200 years previously, but he might have been making an educated guess, as they would have been very hard to see with the instruments available at the time.

Parting shot of Uranus by Voyager 2 (image credit: NASA)

Parting shot of Uranus by Voyager 2 (image credit: NASA)

As far as I know there are no definite plans to re-visit Uranus in the near future.  Several missions have been suggested, but it takes a long time to get there, making it expensive, and these days you need to prove that it’ll be worth it.


1882 – Birth of Harold Babcock in Edgerton, Wisconsin.


 

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