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News Release Archive:

News Release 408 of 959

September 7, 2005 02:30 PM (EDT)

News Release Number: STScI-2005-27

Largest Asteroid May Be 'Mini Planet' with Water Ice

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Video: Hubble Tracks Ceres

Running Time: 20 seconds

The Hubble Space Telescope's Advanced Camera for Surveys studied the asteroid Ceres for a full nine-hour rotational period. The observations represent the most complete view of Ceres, showing that the asteroid has a round shape like Earth and may have a rocky core and a thin crust, also like our planet. Ceres may even have a mantle of water-ice. The features are reflected in this movie of the asteroid's rotational period.

Credit: Credit: NASA, ESA, J.Y. Li (University of Maryland) and G. Bacon (STScI)

Selected still images from this video (click to enlarge):


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Hubble Tracks Ceres Running Time: 20 seconds