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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 year 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

Radio Programs

‘Juicy’ Moons? “Wet” moons in the outer solar system April 15, 2023

Venus and Uranus Looking deep into a giant planet March 29, 2023

Moon and Uranus The Moon hides a giant planet October 11, 2022

Mars and Uranus Red and green in the pre-dawn sky July 31, 2022

Moon and Planets The Moon takes aim at a planet June 23, 2022

Venus and Uranus Mismatched planets in the dawn sky June 10, 2022

Johann Bode Counting off the planets January 19, 2022

Uranus at Opposition II A big entourage for a big planet November 4, 2021

Uranus at Opposition An instant-weight-loss plan November 3, 2021

Moon and Uranus Active rings around a giant planet March 16, 2021

Mars and Uranus A pair of “threes” in the evening sky January 15, 2021

Uranus at Opposition II Powerful winds on a giant planet November 1, 2020

Uranus at Opposition Hot ice inside a giant planet October 31, 2020

Moon and Uranus Losing a “bubble” of air September 6, 2020

Venus and Uranus Taking aim at a faint giant March 7, 2020

Uranus at Opposition Lining up a sideways giant October 28, 2019

Mars and Uranus Red and green in the evening sky February 9, 2019

Uranus at Opposition II The young face of a distant moon October 23, 2018

Uranus at Opposition Knocking over a giant planet October 22, 2018

More Uranus at Opposition Smooth or chunky? October 19, 2017

Uranus at Opposition A giant world with a difference October 18, 2017

Featured Images

Uranus and Neptune from Voyager 2

Colorful Giants July 31, 2022

hubble space telescope portraits of jupiter, saturn, uranus, neptune

The Neighbors November 20, 2021

hubble space telescope view of rings of uranus

Seeing Rings March 16, 2021

Animation of our changing view of Uranus

Planetary Bullseye October 28, 2019

Hubble Space Telescope views of Uranus, Neptune

Big Storms February 10, 2019

Voyager 2 image of Uranus

Blue-Green Giant October 22, 2018

Diagram of the rings and moons of Uranus

Distant Rings October 19, 2017

HST view of Uranus and its moons and rings

New Moons? February 25, 2017