Aliens on 'super-Earths' could be trapped on their home planet

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mochafem 43yo Looking for Men Monterey, California, United States

An independent scientist and a physicist from Harvard believe that the huge gravity of 'super-Earths' would be so strong aliens would be unable to build rockets that could reach space. more on Geo altCom
Bicouple015 21yo Honey Brook, Pennsylvania, United States