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Rocky alien planets may contain oceans

Last Updated: Sunday, March 24, 2013, 19:49

All rocky planets develop liquid-water oceans shortly after forming, suggesting that alien worlds potentially teeming with life may be common throughout the Universe, a new study has found.

Heavy elements `spark planet formation`

Last Updated: Monday, April 23, 2012, 17:59

Usually, planets form in star systems with comparatively high concentrations of elements heavier than hydrogen and helium, a new study has suggested.