Britain Extraterrestrials(01 of35)
Open Image ModalRenowned physicist Stephen Hawking sits in front of a presentation image during a press conference in London, Monday, July 20, 2015. Hawking and Russian tech entrepreneur Yuri Milner are pushing the search for extraterrestrial life into higher gear. The pair said Monday the $100 million \"Breakthrough Initiatives\" program funded by Milner will harness computer power as never before in a search of the heavens. (AP Photo/Matt Dunham) (credit:ASSOCIATED PRESS)
Britain Extraterrestrials(02 of35)
Open Image ModalRussian tech entrepreneur Yuri Milner, left, speaks next to renowned physicist Stephen Hawking during a press conference in London, Monday, July 20, 2015. Renowned physicist Stephen Hawking and Russian tech entrepreneur Yuri Milner are pushing the search for extraterrestrial life into higher gear. The pair said Monday the $100 million \"Breakthrough Initiatives\" program funded by Milner will harness computer power as never before in a search of the heavens. (AP Photo/Matt Dunham) (credit:ASSOCIATED PRESS)
Britain Extraterrestrials(03 of35)
Open Image ModalRussian tech entrepreneur Yuri Milner, left, speaks next to renowned physicist Stephen Hawking during a press conference in London, Monday, July 20, 2015. Renowned physicist Stephen Hawking and Russian tech entrepreneur Yuri Milner are pushing the search for extraterrestrial life into higher gear. The pair said Monday the $100 million \"Breakthrough Initiatives\" program funded by Milner will harness computer power as never before in a search of the heavens. (AP Photo/Matt Dunham) (credit:ASSOCIATED PRESS)
Britain Extraterrestrials(04 of35)
Open Image ModalRenowned physicist Stephen Hawking attends a press conference in London, Monday, July 20, 2015. Renowned physicist Stephen Hawking and Russian tech entrepreneur Yuri Milner are pushing the search for extraterrestrial life into higher gear. The pair said Monday the $100 million \"Breakthrough Initiatives\" program funded by Milner will harness computer power as never before in a search of the heavens. (AP Photo/Matt Dunham) (credit:ASSOCIATED PRESS)
Britain Extraterrestrials(05 of35)
Open Image ModalRenowned physicist Stephen Hawking sits in front of a presentation image during a press conference in London, Monday, July 20, 2015. Renowned physicist Stephen Hawking and Russian tech entrepreneur Yuri Milner are pushing the search for extraterrestrial life into higher gear. The pair said Monday the $100 million \"Breakthrough Initiatives\" program funded by Milner will harness computer power as never before in a search of the heavens. (AP Photo/Matt Dunham) (credit:ASSOCIATED PRESS)
Britain Extraterrestrials(06 of35)
Open Image ModalRenowned physicist Stephen Hawking sits in front of a presentation image during a press conference in London, Monday, July 20, 2015. Renowned physicist Stephen Hawking and Russian tech entrepreneur Yuri Milner are pushing the search for extraterrestrial life into higher gear. The pair said Monday the $100 million \"Breakthrough Initiatives\" program funded by Milner will harness computer power as never before in a search of the heavens. (AP Photo/Matt Dunham) (credit:ASSOCIATED PRESS)
BRITAIN-SPACE-BREAKTHROUGH(07 of35)
Open Image ModalRussian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, attends a press conference in London on July 20, 2015, where he and British scientist Stephen Hawking annouced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(08 of35)
Open Image ModalBritish scientist Stephen Hawking attends a press conference in London on July 20, 2015, where he and Russian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, annouced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(09 of35)
Open Image ModalBritish scientist Stephen Hawking attends a press conference in London on July 20, 2015, where he and Russian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, annouced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(10 of35)
Open Image ModalUA astronomer Frank Drake, speaks during a news conference in London on July 20, 2015, where British scientist Stephen Hawking and Russian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, announced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(11 of35)
Open Image ModalUS astronomer Geoffrey \'Geoff\' W. Marcy, Professor of Astronomy at the University of California, pauses during a news conference in London on July 20, 2015, where British scientist Stephen Hawking and Russian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, announced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(12 of35)
Open Image ModalUS author Ann Druyan, speaks during a news conference in London on July 20, 2015, where British scientist Stephen Hawking and Russian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, announced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(13 of35)
Open Image ModalBritish cosmologist Professor Baron Martin Rees of Ludlow, speaks during a news conference in London on July 20, 2015, where British scientist Stephen Hawking and Russian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, announced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(14 of35)
Open Image ModalRussian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner (L), and British scientist Stephen Hawking attend a press conference in London on July 20, 2015, where they annouced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(15 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: DST Global Founder Yuri Milner and Theoretical Physicist Stephen Hawking attends a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(16 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(17 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(18 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) DST Global Founder Yuri Milner, Theoretical Physicist Stephen Hawking, Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake and Creative Director of the Interstellar Message, NASA Voyager Ann Druyan attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
BRITAIN-SPACE-BREAKTHROUGH(19 of35)
Open Image ModalBritish scientist Stephen Hawking attends a press conference in London on July 20, 2015, where he and Russian entrepreneur and co-founder of the Breakthrough Prize, Yuri Milner, annouced the launch of Breakthrough Initiative, a new project to attempt to detect life in the Cosmos. AFP PHOTO / NIKLAS HALLE\'N (Photo credit should read NIKLAS HALLE\'N/AFP/Getty Images) (credit:NIKLAS HALLE\'N via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(20 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(21 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(22 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(23 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: Chairman Emeritus, SETI Institute Frank Drake and Creative Director of the Interstellar Message, NASA Voyager Ann Druyan attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(24 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(25 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) Theoretical Physicist Stephen Hawking, Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(26 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) Theoretical Physicist Stephen Hawking, Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(27 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) DST Global Founder Yuri Milner, Theoretical Physicist Stephen Hawking, Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(28 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) DST Global Founder Yuri Milner, Theoretical Physicist Stephen Hawking and Cosmologist and astrophysicist Lord Martin Rees attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(29 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) Theoretical Physicist Stephen Hawking, Cosmologist and astrophysicist Lord Martin Rees and Chairman Emeritus, SETI Institute Frank Drake attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(30 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) DST Global Founder Yuri Milner, Theoretical Physicist Stephen Hawking, Cosmologist and astrophysicist Lord Martin Rees, Chairman Emeritus, SETI Institute Frank Drake, Creative Director of the Interstellar Message, NASA Voyager Ann Druyan and Professor of Astronomy, University of California Geoff Marcy attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(31 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: (L-R) DST Global Founder Yuri Milner, Theoretical Physicist Stephen Hawking and Cosmologist and astrophysicist Lord Martin Rees attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(32 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: Theoretical Physicist Stephen Hawking attends a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(33 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: Cosmologist and astrophysicist Lord Martin Rees and Chairman Emeritus, SETI Institute Frank Drake attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Yuri Milner And Stephen Hawking Host Press Conference On The Breakthrough Life In The Universe Initiatives(34 of35)
Open Image ModalLONDON, ENGLAND - JULY 20: DST Global Founder Yuri Milner and Theoretical Physicist Stephen Hawking attend a press conference on the Breakthrough Life in the Universe Initiatives, hosted by Yuri Milner and Stephen Hawking, at The Royal Society on July 20, 2015 in London, England. (Photo by Stuart C. Wilson/Getty Images for Breakthrough Initiatives) (credit:Stuart C. Wilson via Getty Images)
Britain Extraterrestrials(35 of35)
Open Image ModalRenowned physicist Stephen Hawking sits in front of a presentation image during a press conference in London, Monday, July 20, 2015. Renowned physicist Stephen Hawking and Russian tech entrepreneur Yuri Milner are pushing the search for extraterrestrial life into higher gear. The pair said Monday the $100 million \"Breakthrough Initiatives\" program funded by Milner will harness computer power as never before in a search of the heavens. (AP Photo/Matt Dunham) (credit:Matt Dunham/AP)