Uranus is another gas giant, smaller than Jupiter and Saturn, and blue-green in colour. Its most unusual feature is that instead of spinning upright, like a top, it 'rolls' around its orbit like a ball on its side, its axis being tilted at 98 degrees (Earth's axial tilt is 23.5). Once thought to have 5 moons, the latest count was 27…

Text & images copyright © 2015 AstroArt by David A. Hardy. All Rights Reserved.

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