Water on Ceres

Ceres is the largest asteroid in the asteroid belt and was the first asteroid ever discovered, in 1802. Recent data collected by the Hubble Space Telescope suggest that the outer mantle of Ceres is frozen liquid containing ammonia and water. There is evidence that Ceres may be as much as 20% water. We will probably discover more when the Dawn probe reached Ceres in 2015.

Asteroid 1 Ceres – [planetary.org]

Ceres, the first asteroid to be discovered, is by far the largest and most massive body in the main asteroid belt. In fact, it comprises about a third of the total mass of the entire main belt. Its size and mass are sufficient to give it a spherical shape, like the planets.

Largest Asteroid May Be ‘Mini Planet’ with Water Ice
– [hubblesite.org]

The astronomers suspect that water ice may be buried under the asteroid’s crust because the density of Ceres is less than that of the Earth’s crust, and because the surface bears spectral evidence of water-bearing minerals. They estimate that if Ceres were composed of 25 percent water, it may have more water than all the fresh water on Earth. Ceres’ water, unlike Earth’s, would be in the form of water ice and located in the mantle, which wraps around the asteroid’s solid core.

CERES: THE DWARF PLANET – [comcast.net/~eliws]

This web page is a collection of information regarding the Dwarf Planet Ceres. It compiles documents and images from a variety of sources to try and create the most informative website about Ceres on the net. We hope that through this information you will be as informed about Ceres as any professional.


As far as we know, life needs water to survive — and lots of it to thrive. Ceres is the closest large celestial body to Earth which is thought to have an abundance of fresh water. It is also closest to the sun of any large icy body, which along with possible interior heat might warm it enough for subsurface liquid water to exist.

Dawn in the Belt

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