Uranus blasted a gas bubble 22,000 times bigger than Earth

There’s a giant blank spot in researchers’ ever-growing map of the solar system. Over the last two decades, a veritable fleet of probes has measured quakes on Mars, scrutinized the grooves in Saturn’s rings, observed jet streams on Jupiter, and heard the heartbeat of Pluto. But in terms of up-close-and-personal exploration, our image of Uranus hasn’t advanced substantially beyond the featureless blue beachball captured by Voyager 2’s vintage instruments in 1986.

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