The dwarf planet Ceres might be home to an underground ocean of water

The dwarf planet Ceres might be home to an underground ocean of water

MIT Technology Review·2020-08-14 13:13

Ceres, the largest asteroid in the solar system, seems to have liquid water seeping onto its surface, according to a new paper in Nature Astronomy. Data from NASA’s Dawn orbiter, the study suggests, show signs that it may be harboring an ocean deep underground. 

The background: Ceres, a dwarf planet located in the asteroid belt between Mars and Jupiter, was studied intensely by the Dawn orbiter from March 2015 to November 2018. In its final weeks, the orbiter came as close as 22 miles from Ceres’s surface and collected a tremendous amount of data about the dwarf planet’s chemical composition. Dawn found many sodium chloride deposits on the surface, which scientists thought likely came from liquid that had seeped up onto the surface and evaporated, leaving behind a salty crust.

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