article_snippet: Billions of stars in our galaxy have between one and three planets which could potentially support life.
article_snippet: According to the statistics and the indications we have, a good share of the planets in the habitable zone will be solid planets where there might be liquid water and where life could exist,' said Steffen Kjaer Jacobsen, from the University of Copenhagen.
article_snippet: The findings has also identified an estimated 3,000 other candidate worlds.
article_snippet: Extrapolating further, this suggested that there could be billions of stars in the Milky Way with habitable zone planets where surface water and life could exist.
highlights_snippet: Astronomers used an improved version of a 250-year old equation .
  
highlights_snippet: Extending equation to the entire Milky Way means there are more habitable worlds in existence than previously believed .