New study on moons of Uranus raises chance of life

The planet Uranus and its five biggest moons may not be the dead sterile worlds that scientists have long thought.

Instead, they may have oceans, and the moons may even be capable of supporting life, scientists say.

Much of what we know about them was gathered by Nasa’s Voyager 2 spacecraft... flew past and sent back sensational pictures of the planet and its five major moons.

But what amazed scientists even more was the data Voyager 2 sent back indicating that the Uranian system was even weirder than they thought.

The measurements from the spacecraft’s instruments indicated that the planets and moons were inactive, unlike the other moons in the outer solar system. They also showed that Uranus’s protective magnetic field was strangely distorted. It was squashed and pushed away from the Sun.

A planet’s magnetic field traps any gases and other material coming off the planet and its moons. These might be from oceans or geological activity. Voyager 2 found none, suggesting that Uranus and its five largest moons were sterile and inactive.

This came as an enormous surprise because it was unlike the solar system’s other planets and their moons

But a new analysis shows that Voyager's visit coincided with a powerful solar storm, which led to a misleading idea of what the Uranian system is really like.

Nasa has plans to launch a new mission, the Uranus Orbiter and Probe, to go back for a closer look...

Nasa’s Uranus probe is expected to arrive by 2045, which is when scientists hope to find out whether these far-flung icy moons, once thought of as being dead worlds, might have the possibility of being home to life.

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