article_snippet: Since then, 87% of how much water has been lost to space, with the rest stored in ice at the poles .
article_snippet: It is thought that while 87 per cent of the water has since been lost to space, owing largely to the planet losing
article_snippet: , the remaining 13 per cent resides in the ice caps.
article_snippet: It is thought that while 87% of the water has since been lost to space (illustrated), owing largely to the planet losing the water atmosphere, the remaining 13% resides in the ice caps.
highlights_snippet: Since then, 87% has been lost to space and the rest is in ice at the poles .
  