According to paragraph 4, a sign that 55 Cancri e is a super Earth is that ____.
Courtesy of the University of Cambridge and World Science staff at http://www.world-science.net/othernews/160331_55Cancri-e.htm
it is twice the size of Earth and eight times the weight
a year lasts just 18 hours
it is tidally locked
they haven’t found any other planet so small
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