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Comparison of the shapes of celestial bodies of various sizes



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Comparison of the shapes of celestial bodies of various sizes
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The illustration compares the size of five asteroids – Gaspra, Eros, Ida, Vesta and Ceres – and the planet Mars (circular section in the lower part of the picture). The figure in brackets indicates the size of each body at its largest point. The size comparison between Ceres, Earth and its Moon is shown in the picture for the Astronomical Question from week 19: 'Where is the planet between Mars and Jupiter?' The asteroid Ida can also be seen in the Astronomical Question from week 21: 'How can an asteroid strike be prevented?'

Credit: NASA/JPL/Johns Hopkins University/Space Telescope Science Institute.