Artist's impression of a rocky and water-rich asteroid being torn apart by the strong gravity of the white dwarf star GD 61. Similar objects in the solar system likely delivered the bulk of water on ... more 
Artist's impression of a rocky and water-rich asteroid being torn apart by the strong gravity of the white dwarf star GD 61. Similar objects in the solar system likely delivered the bulk of water on Earth and represent the building blocks of less 
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SPACE.com | Photo By Mark A. Garlick, space-art.co.uk, University of Warwick and University of Cambridge
Thu, Oct 10, 2013 2:20 PM EDT