Tag Archives: seventh planet from the Sun

What NASA will learn from a mission to a wild world

Uranus, the seventh planet from the Sun, orbits the outer solar system about two billion miles (3.2 billion kilometers) from Earth. It’s a huge world; It is four times the diameter of Earth, 15 times its mass, and 63 times its volume. Uranus, which has not been visited by spacecraft in more than 35 years,… Read More »