Craig Ventner just delivered a lecture stating that his company can now send human chromosomes through light transmission. So, it is possible that human beings can be sent by radio signals to another planet outside our solar system. This could be how humans in the future can colonize other galaxies without ever riding on a rocket ship.
https://www.youtube.com/watch?v=mVkPgOg7hAw https://www.youtube.com/watch?v=mVkPgOg7hAw
