article_snippet.sent: And from this, Fergus Simpson calculates that if intelligent extraterrestrials exist intelligent extraterrestrials will typically weigh 650lbs (300kg) - the median weight of a polar bear.
article_snippet.sent: Fergus Simpson from University of Barcelona applied a mathematical formula to assume aliens obey the same laws of conservation of energy as animals  on Earth .
article_snippet.sent: Fergus Simpson came to this conclusion by applying a mathematical formula that assumes aliens obey the same laws of conservation of energy as animals do on Earth.
article_snippet.sent: And, if they exist, Mr Simpson believes intelligent aliens typically weigh more than 650 lbs (300kg) - around the size of a polar bear (stock image)
highlights_snippet.sent: Fergus Simpson said aliens probably weigh more than 650 lbs (300kg)
  Calculations based on idea that there’s a minimum size  for intelligent life .
  