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The seventh planet from the Sun in the solar system. Uranus orbits the Sun at an average distance of 19.2 AU. The planet has a mass 14.5 times the mass of Earth and a radius 4.0 times the radius of Earth. Uranus is a gas planet made of hydrogen, helium, and methane and has no solid surface. The planet’s axial tilt is an extreme 98 degrees, causing one day on Uranus to equal 84 years, equal to the time it takes Uranus to orbit the Sun once.



Uranus February 10, 2016

Realm of the Giants June 10, 2010

Featured Images

HST view of Uranus and its moons and rings

New Moons? February 25, 2017

Hubble Space Telescope view of Uranus

Tilted Giant October 6, 2014

Hubble Space Telescope view of planet Uranus

Blue-Green Giant October 1, 2013

Rings and Moons

Rings and Moons June 4, 2010

Big Blue Planet

Big Blue Planet June 1, 2010

Radio Programs

Uranus at Opposition II Shrink-wrapping a moon October 14, 2016

Uranus at Opposition Knocking over a giant planet October 13, 2016

Uranus at Opposition A good showing for “George’s Star” October 10, 2015

Moon and Uranus Pointing out a neglected giant August 3, 2015

Moon and Uranus The Moon takes aim at a faint giant November 30, 2014

Uranus at Opposition Lining up a giant oddball October 5, 2014

William Herschel II Making up for lost time November 14, 2013

Uranus at Opposition II A giant entourage for a giant planet October 1, 2013

Uranus at Opposition Pondering some “giant” mysteries September 30, 2013

Double Impact Bowling over a giant planet September 29, 2012

Uranus at Opposition Overlooking a giant planet September 27, 2012

Rings of Uranus A dark discovery for a giant planet March 7, 2012

Venus and Uranus A chance to see a distant giant February 7, 2012