Hyperion  is one of the largest bodies known to be highly irregularly shaped (non-ellipsoidal; i.e. not in hydrostatic equilibrium) in the Solar System. The only larger moon known to be irregular in shape is Neptune's moon Proteus. Hyperion has about 15% of the mass of Mimas, the least massive ellipsoidal body. The largest crater on Hyperion is approximately 121.57 km in diameter and 10.2 km deep. A possible explanation for the irregular shape is that Hyperion is a fragment of a larger body that was broken by a large impact in the distant past. A proto-Hyperion could have been from 350 to 1000 km in diameter. Over about 1,000 years, ejecta from a presumed Hyperion breakup would have impacted Titan at low speeds building up volatiles in the Atmosphere of Titan.


Hyperion can be terraformed by sending a heating probe to the center of the object. Hyperion will be very difficult to terraform because of its odd shape. The probe will be very small to fit into one of the moon's pores. Tiny Hyperion will be terraformed by a tiny probe. The probe itself will not be very fast. The probe will enter the zone of a speed of 1000-2000 miles per hour? The Probe will now start circling around Hyperion untill it lands on its surface at the right angle, then begin drilling. Hyperion will now have a melting center that will shape itself (due to hydrostatic equilibrium) into a spherical shaped moon.The probe will now make a new Atmosphere around Hyperion, as nanobots construct a high-altitude worldhouse dome to contain the gas. Hyperion will be a good place for a civilization. 

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