Space Travel (IMAGE) University of Tokyo Caption In the space of eight weeks, players of Pokémon GO once collectively walked 4.6 billion kilometers, or roughly the distance from Earth to Neptune. Credit Image: Flickr/sethtate under Creative Commons BY-NC-SA Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.