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Discovered in 1801 by the Italian astronomer Giuseppe Piáis, Ceres is one of the planets considered dwarfs. In 2015, bright spots or spots were observed on its surface, and thanks to NASA's Dawn space probe today we have images that confirm them. In Ceres' photograph, we can see two bright spots located inside a crater. The image was taken by the Dawn probe on February 19, 2015, from an altitude of 46,000 kilometers.
Around these bright spots several theories have emerged. Among other possibilities, which could be scars of recent impacts, minerals deposited by active geysers or water ice from an eruption of cryovolcanoes, extraterrestrial volcanoes of ice and water. In them, water, at a higher temperature than surface ice, leaves the surface frozen by a fracture.
What is known for sure is that these spots are getting brighter. For Mark Sykes, one of the scientists participating in the Dawn probe mission, the possibility of water ice in Ceres is a real find. This would confirm the activity of cryovolcanism on the dwarf planet, which could indicate that there are underground water deposits.
A question that arises is that Ceres does not have moons or tectonic activity to raise the temperature of the water inside, so a possible cryo-volcanic activity on the planet has not been explained.
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