Here's a link from DARPA's site as well: DARPA ENCOURAGES INDIVIDUALS AND ORGANIZATIONS TO LOOK TO THE STARS; ISSUES CALL FOR PAPERS FOR 100 YEAR STARSHIP STUD

Here's a link from DARPA's site as well: DARPA ENCOURAGES INDIVIDUALS AND ORGANIZATIONS TO LOOK TO THE STARS; ISSUES CALL FOR PAPERS FOR 100 YEAR STARSHIP STUDY PUBLIC SYMPOSIUM http://www.darpa.mil/NewsEvents/Releases/2011/2011/06/15_DARPA_Encourages_Individuals_and_Organizations_to_Look_to_the_Stars.aspx http://www.darpa.mil/NewsEvents/Releases/2011/2011/06/15_DAR...