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It has been calculated that Ceres averages one such cryovolcano every 50 million years. [45] Yamor Mons (previously named Ysolo Mons), near the north pole, has a diameter of 16 km [ 48 ] and is the only other Cererian mountain with the shape of Ahuna Mons, though old and battered, the cold temperatures at the pole have preserved its shape. [ 45 ]
Ceres is saturated with impact craters.Many have a central pit or bright spot. In the first batch of 17 names approved by the IAU, craters north of 20° north latitude had names beginning with A–G (with Asari being the furthest north), those between 20° north and south latitude beginning with H–R, and those further south beginning with S–Z (with Zadeni being the furthest south).
As with many craters on Ceres, Haulani has been extensively modified by mass wasting processes, with landslide deposits from the crater rim covering parts of its floor. It is one of the youngest large craters on Ceres, estimated to have been formed between 1.7 and 5.9 million years ago. As a result, it is one of Ceres's brightest surface features.
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Ceres has an axial tilt of 4°, [10] small enough for its polar regions to contain permanently shadowed craters that are expected to act as cold traps and accumulate water ice over time, similar to what occurs on the Moon and Mercury. About 0.14% of water molecules released from the surface are expected to end up in the traps, hopping an ...
Ceres, the largest object in the asteroid belt between Mars and Jupiter, is an "ocean world" with a big reservoir of salty water under its frigid surface, scientists said in findings that raise ...
Of the world’s roughly 200 impact craters, 31 are located in Canada. Quebec itself has 10 other known impact sites. In the presentation to the Meteoritical Society, Rochette showed how the ring ...
The earliest scientist to study and produce a paper using crater counting as an age indicator was Ernst Öpik, an Estonian astronomer and astrophysicist. [6] Ernst Öpik utilized the crater counting method to date the Moon's Mare Imbrium to be approximately 4.5 billion years of age, estimating the maria to be about 1000 years younger than the contintentes. [6]