A crater on this body is the location of several bright spots referred to as faculae, which are believed to be caused by high levels of sodium carbonate. For 10 points each:
[10e] Name this largest object in the asteroid belt. It is the asteroid belt's only dwarf planet.
ANSWER: Ceres [or 1 Ceres]
[10m] The salts making up Ceres's bright spots are thought to have been deposited by this process, which occurs at Ahuna Mons, making Ceres the closest known body to display this phenomenon. Observations of this phenomenon on Europa and Enceladus (en-SELL-ah-dus) allowed the determination of the composition of their subsurface oceans.
ANSWER: cryovolcanism [or word forms such as cryovolcanos; prompt on volcanism or volcanos]
[10h] NASA launched this probe to investigate Ceres and another body in the asteroid belt, Vesta, in the 2010s. It was the first spacecraft to orbit a dwarf planet.
ANSWER: Dawn
<Fredrick Morlan , Science - Astronomy - Stars and smaller>