No sniggering at the back! Astronomers discover the secret of vast cracks on the surface of the 'Frankenmoon' of Uranus

It is one of the oddest moons in the solar system. Miranda, a small, icy moon of Uranus, is covered in giant fault canyons 12 times as deep as the Grand Canyon, giving it a unique look leading to it being called a 'Frankenstein moon'. Miranda's giant fault canyons are as much as 12 times as deep as the Grand Canyon. Due to Miranda's low gravity and large cliffs, a rock dropped off the edge of the highest cliff would take a full 10 minutes to reach the foot of the cliff. Despite its relatively small size, Miranda appears to have experienced an episode of intense resurfacing that resulted in the formation of at least three remarkable and unique surface features -- polygonal-shaped regions called coronae.