Ceres is the largest 'asteroid' in our solar system, big enough that it's actually classified as a dwarf planet, like Pluto.
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What NASA's Dawn Saw on Ceres and Vesta Stunned Me?

A quiet NASA mission rewrote what we know about the asteroid belt. Dawn visited Vesta and Ceres two time-capsule worlds ...
The dwarf planet Ceres, the only dwarf planet in the main asteroid belt, might have once been hospitable for life, according to a recent study. NASA / JPL-Caltech / UCLA / MPS / DLR / IDA Ceres, the ...
Exciting space news! Astronomers have found evidence that Ceres, a dwarf planet (a.k.a. large asteroid) in between Mars and Jupiter, has water vapor plumes. The discovery, not unlike that of Jupiter's ...