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Earth’s Crust – Bill Nye the Science Guy 1/3

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Earth’s Crust – Bill Nye the Science Guy 1/3

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(Astronomy) Pondering Extraterrestrial Life (5/5)

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Extraterrestrial life is defined as life that does not originate from Earth. It is unknown whether any such life exists, and all discussion of it must be regarded as highly speculative. Various claims have been made for evidence of its existence, such as those listed in a 2006 New Scientist article. However, the mainstream scientific community regards all such claims as unconvincing. A less direct argument for extraterrestrial life relies on the vast size of the observable universe. According to this argument, endorsed by Carl Sagan, it would be improbable for life not to exist somewhere other than Earth. The theorization of extraterrestrial life is known as astrobiology, exobiology, or xenobiology. One possibility is that life has emerged independently at many places throughout the universe. Another possibility is panspermia or exogenesis, in which life would have spread between habitable planets. These two hypotheses are not necessarily mutually exclusive. Possible forms of extraterrestrial life range from simple bacteria-like organisms to sapient beings far more advanced than humans. Suggested locations on which life might have developed, or which might continue to host life today, include the planets Venus and Mars, moons of Jupiter and Saturn (eg Europa, Enceladus and Titan) and Gliese 581 c and d, recently discovered to be near Earth-mass extrasolar planets apparently located in their star’s habitable zone, and with the potential to have liquid water. Beliefs that

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(Astronomy) Pondering Extraterrestrial Life (4/5)

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Extraterrestrial life is defined as life that does not originate from Earth. It is unknown whether any such life exists, and all discussion of it must be regarded as highly speculative. Various claims have been made for evidence of its existence, such as those listed in a 2006 New Scientist article. However, the mainstream scientific community regards all such claims as unconvincing. A less direct argument for extraterrestrial life relies on the vast size of the observable universe. According to this argument, endorsed by Carl Sagan, it would be improbable for life not to exist somewhere other than Earth. The theorization of extraterrestrial life is known as astrobiology, exobiology, or xenobiology. One possibility is that life has emerged independently at many places throughout the universe. Another possibility is panspermia or exogenesis, in which life would have spread between habitable planets. These two hypotheses are not necessarily mutually exclusive. Possible forms of extraterrestrial life range from simple bacteria-like organisms to sapient beings far more advanced than humans. Suggested locations on which life might have developed, or which might continue to host life today, include the planets Venus and Mars, moons of Jupiter and Saturn (eg Europa, Enceladus and Titan) and Gliese 581 c and d, recently discovered to be near Earth-mass extrasolar planets apparently located in their star’s habitable zone, and with the potential to have liquid water. Beliefs that

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Bill Nye The Science Guy talks about President Obama’s NASA space policy at KSC

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Bill Nye, television’s “The Science Guy” answers questions and gives his thoughts on NASA’s new mission and President Obama’s space policy shortly before the President spoke at NASA’s space conference which was held at Kennedy Space Center in Florida on April 15, 2010. President Obama unveiled a new mission and goals for NASA that include visits to asteroids by 2925 and missions to the planet Mars in the early 2030′s. The space shuttle, however, will be retired in 2010 after completing assembly of the International Space Station. www.spaceflightnews.net

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(Astronomy) Pondering Extraterrestrial Life (3/5)

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Extraterrestrial life is defined as life that does not originate from Earth. It is unknown whether any such life exists, and all discussion of it must be regarded as highly speculative. Various claims have been made for evidence of its existence, such as those listed in a 2006 New Scientist article. However, the mainstream scientific community regards all such claims as unconvincing. A less direct argument for extraterrestrial life relies on the vast size of the observable universe. According to this argument, endorsed by Carl Sagan, it would be improbable for life not to exist somewhere other than Earth. The theorization of extraterrestrial life is known as astrobiology, exobiology, or xenobiology. One possibility is that life has emerged independently at many places throughout the universe. Another possibility is panspermia or exogenesis, in which life would have spread between habitable planets. These two hypotheses are not necessarily mutually exclusive. Possible forms of extraterrestrial life range from simple bacteria-like organisms to sapient beings far more advanced than humans. Suggested locations on which life might have developed, or which might continue to host life today, include the planets Venus and Mars, moons of Jupiter and Saturn (eg Europa, Enceladus and Titan) and Gliese 581 c and d, recently discovered to be near Earth-mass extrasolar planets apparently located in their star’s habitable zone, and with the potential to have liquid water. Beliefs that

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(Astronomy) Pondering Extraterrestrial Life (2/5)

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Extraterrestrial life is defined as life that does not originate from Earth. It is unknown whether any such life exists, and all discussion of it must be regarded as highly speculative. Various claims have been made for evidence of its existence, such as those listed in a 2006 New Scientist article. However, the mainstream scientific community regards all such claims as unconvincing. A less direct argument for extraterrestrial life relies on the vast size of the observable universe. According to this argument, endorsed by Carl Sagan, it would be improbable for life not to exist somewhere other than Earth. The theorization of extraterrestrial life is known as astrobiology, exobiology, or xenobiology. One possibility is that life has emerged independently at many places throughout the universe. Another possibility is panspermia or exogenesis, in which life would have spread between habitable planets. These two hypotheses are not necessarily mutually exclusive. Possible forms of extraterrestrial life range from simple bacteria-like organisms to sapient beings far more advanced than humans. Suggested locations on which life might have developed, or which might continue to host life today, include the planets Venus and Mars, moons of Jupiter and Saturn (eg Europa, Enceladus and Titan) and Gliese 581 c and d, recently discovered to be near Earth-mass extrasolar planets apparently located in their star’s habitable zone, and with the potential to have liquid water. Beliefs that

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(Astronomy) Pondering Extraterrestrial Life (1/5)

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Extraterrestrial life is defined as life that does not originate from Earth. It is unknown whether any such life exists, and all discussion of it must be regarded as highly speculative. Various claims have been made for evidence of its existence, such as those listed in a 2006 New Scientist article. However, the mainstream scientific community regards all such claims as unconvincing. A less direct argument for extraterrestrial life relies on the vast size of the observable universe. According to this argument, endorsed by Carl Sagan, it would be improbable for life not to exist somewhere other than Earth. The theorization of extraterrestrial life is known as astrobiology, exobiology, or xenobiology. One possibility is that life has emerged independently at many places throughout the universe. Another possibility is panspermia or exogenesis, in which life would have spread between habitable planets. These two hypotheses are not necessarily mutually exclusive. Possible forms of extraterrestrial life range from simple bacteria-like organisms to sapient beings far more advanced than humans. Suggested locations on which life might have developed, or which might continue to host life today, include the planets Venus and Mars, moons of Jupiter and Saturn (eg Europa, Enceladus and Titan) and Gliese 581 c and d, recently discovered to be near Earth-mass extrasolar planets apparently located in their star’s habitable zone, and with the potential to have liquid water. Beliefs that

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Bill Gates Keynote

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Bill Gates, co-chair and trustee of the Bill & Melinda Gates Foundation and chairman of Microsoft Corp., presented the keynote address at dedication ceremonies for the Gates Center for Computer Science and the Hillman Center for Future-Generation Technologies at Carnegie Mellon University on September 22, 2009. Pittsburgh philanthropists Henry and Elsie Hillman also participated in the daylong celebration of the Gates and Hillman centers at Carnegie Mellon’s Pittsburgh campus. The newly constructed Gates and Hillman Centers contain classrooms, research space and offices for the School of Computer Science. For more on the Bill & Melinda Gates Foundation, visit: www.gatesfoundation.org For more on the School of Computer Science, visit www.cs.cmu.edu

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A ccnversation with Michio Kaku 29-01-2010 Part 10 Art Bell Michio Kaku Coast to Coast AM

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A ccnversation with Michio Kaku 29-01-2010 Part 10 Art Bell Michio Kaku Coast to Coast AM Filling in for George Noory, Art Bell was joined for the entire program by one of his favorite guests, theoretical physicist Dr. Michio Kaku, for a discussion on a variety of science-related topics. Kaku provided an update on the problem-plagued Large Hadron Collider (LHC), while quashing a theory that suggested the giant particle accelerator was being sabotaged from the future. Kuku said the LHC is operating very smoothly now and should begin producing real data in six months. Scientists hope this colossal experiment will help them better understand the birth of our universe and prove the existence of dark mater, Kaku explained. He commented on the Royal Society’s recent conference on extraterrestrial life and its possible effect on humanity. According to Kaku, this topic is being debated in serious academic circles for a few reasons: the discovery of numerous extrasolar planets, the Kepler Telescope, and the Allen Telescope Array (ATA). So far we have found 400 exoplanets about the size of Jupiter, Kaku said. Kepler will help us find much smaller Earth-size planets, perhaps some with liquid oceans, where life could have developed. The ATA will allow us listen for distant signals from these potential alien civilizations, he added. If other life exists in the universe, Kaku thinks it would have evolved very differently from life on Earth. Aquatic species may be teaming beneath the

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A ccnversation with Michio Kaku 29-01-2010 Part 12 Art Bell Michio Kaku Coast to Coast AM

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A ccnversation with Michio Kaku 29-01-2010 Part 12 Art Bell Michio Kaku Coast to Coast AM Filling in for George Noory, Art Bell was joined for the entire program by one of his favorite guests, theoretical physicist Dr. Michio Kaku, for a discussion on a variety of science-related topics. Kaku provided an update on the problem-plagued Large Hadron Collider (LHC), while quashing a theory that suggested the giant particle accelerator was being sabotaged from the future. Kuku said the LHC is operating very smoothly now and should begin producing real data in six months. Scientists hope this colossal experiment will help them better understand the birth of our universe and prove the existence of dark mater, Kaku explained. He commented on the Royal Society’s recent conference on extraterrestrial life and its possible effect on humanity. According to Kaku, this topic is being debated in serious academic circles for a few reasons: the discovery of numerous extrasolar planets, the Kepler Telescope, and the Allen Telescope Array (ATA). So far we have found 400 exoplanets about the size of Jupiter, Kaku said. Kepler will help us find much smaller Earth-size planets, perhaps some with liquid oceans, where life could have developed. The ATA will allow us listen for distant signals from these potential alien civilizations, he added. If other life exists in the universe, Kaku thinks it would have evolved very differently from life on Earth. Aquatic species may be teaming beneath the

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