Carl Sagan Explains the Drake Equation

Carl_Sagan_Explains_the_Drake_Equationhttp://www.FreeScienceLectures.com The most famous American astronomer and astrophysicist Carl Sagan explains the Drake equation. The Drake equation (rarely also called the Green Bank equation or the Sagan equation) is a famous result in the speculative fields of xenobiology, astrosociobiology and the search for extraterrestrial intelligence. The Drake equation states that: N = R* fp ne fl fi fc L, where: N is the number of civilizations in our galaxy, with which we might hope to be able to communicate; R* is the rate of star formation in our galaxy fp is the fraction of those stars that have planets ne is the average number of planets that can potentially support life per star that has planets fl is the fraction of the above that actually go on to develop life at some point fi is the fraction of the above that actually go on to develop intelligent life fc is the fraction of civilizations that develop a technology that releases detectable signs of their existence into space L is the length of time such civilizations release detectable signals into space. --- It's Never too Late to Study: http://www.FreeScienceLectures.com --- Notice: This video is copyright by its respectful owners. The website address on the video does not mean anything. ---

Rating:    User: FreeScienceLectures   2007-06-07T13:07:06.897Z

Tags: carl | sagan | drake | equation | life | extraterrestrial | intelligence | planets | stars |

"We need the stars... We need purpose!

We_need_the_stars..._We_need_purpose! {Apr 15, 2001: Mars Odyssey on Delta II Rocket.} "We need the stars... We need purpose! We need the image the Destiny [to take root among the stars] gives us of ourselves as a purposeful, growing species. We need to become the adult species that the Destiny can help us become! If we're to be anything other than smooth dinosaurs who evolve, specialize and die, we need the stars.... When we have no difficult, long-term purpose to strive toward, we fight each other. We destroy ourselves. We have these chaotic, apocalyptic periods of murderous craziness." Octavia Butler, Parable of the Talents, 1998 Music by, Clutch: Blast Tyrant - WYSIWYG WYSIWYG: What You See Is What You Get.

Rating:    User: Universe   2007-07-13T12:46:56.257Z

Tags: Carl | neil | tyson | riwkins | space | Clutch |

A Chick Track - The Last Generation

A_Chick_Track_-_The_Last_GenerationBig Brother's nightmarish world order is just around the corner. Christ is coming soon for believers. Will you be left behind?

Rating:    User: Universe   2007-06-26T19:07:27.263Z

Tags: Jack | Chick | christians | bible | jesus | fear | satan |

A Chick Track - The Great Escape

A_Chick_Track_-_The_Great_Escape"PLEASE LEAVE FEEDBACK"

Rating:    User: Universe   2007-06-19T19:51:43.73Z

Tags: Universe | time | earth | god | faith | the | end | times | hawkins | dawkins |

Cosmos - The Speed Of Light PT 1

Cosmos_-_The_Speed_Of_Light_PT_1Carl Sagan Explains The Speed Of Light

Rating:    User: pyoa2004   2008-06-14T13:01:38.627Z

Tags: cosmos | evolution | sagen | animals | man | women | light | speed |

pale blue dot

pale_blue_dotwe still have time to change Inspired by the words of Carl sagan as he presented to the world in 1991, the most distant image of earth ever taken at 4 billion miles by voyager. That image and all it invokes, should be our only religion

Rating:    User: icecorescientist   2007-02-22T15:49:00.373Z

Tags: carl-sagan | global-warming | climate-change | war | athiests | love |

Bible Wisdom (part 1) - How to Catch an Adulteress

Bible_Wisdom_(part_1)_-__How_to_Catch_an_AdulteressYOU decide if the bible is inspired by God. Just think of the real women that had to undergo this test.... Women have been subjugated in so many ways by paternal societies and their MALE gods. Who knows the measure of suffering endured by innocent women and girls at the hands of religious fanatics? Regarding superstion and miracles, Ethan Allen said: "In those parts of the world where learning and science has prevailed, miracles have ceased; but in those parts of it as are barbarous and ignorant, miracles are still in vogue" YOU decide if the bible is inspired by God. Just think of the real women that had to undergo this test.... Women have been subjugated in so many ways by paternal societies and their MALE gods. Who knows the measure of suffering endured by innocent women and girls at the hands of religious fanatics? Regarding superstion and miracles, Ethan Allen said: "In those parts of the world where learning and science has prevailed, miracles have ceased; but in those parts of it as are barbarous and ignorant, miracles are still in vogue"

Rating:    User: FoulHeretic   2007-08-22T02:38:38.46Z

Tags: wisdom | adultery | subjugation | foulheretic | choice | | atheis | morality | iraq | bush | conservative | republican | fox | morality | ron | paul | bill | maher | islam |

On The Turning Away: Pale Blue Dot

On_The_Turning_Away:_Pale_Blue_Dot"Since, in the long run, every planetary civilization will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring--not because of exploratory or romantic zeal, but for the most practical reason imaginable: staying alive... If our long-term survival is at stake, we have a basic responsibility to our species to venture to other worlds." Carl Sagan, Pale Blue Dot, 1994 "I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents that can befall life on a single planet. But I'm an optimist. We will reach out to the stars." Stephen Hawking, interview with Daily Telegraph, 2001 "Let me end with an explanation of why I believe the move into space to be a human imperative. It seems to me obvious in too many ways to need listing that we cannot much longer depend upon our planet's relatively fragile ecosystem to handle the realities of the human tomorrow. Unless we turn human growth and energy toward the challenges and promises of space, our only other choice may be the awful risk, currently demonstrable, of stumbling into a cycle of fratricide and regression which could end all chances of our evolving further or of even surviving." Gene Roddenberry, Planetary Report Vol. 1, 1981 "The Earth is just too small and fragile a basket for the human race to keep all its eggs in." Robert Heinlein, speech Music by, PINK FLOYD Momentary Lapse of Reason: "ON THE TURNING AWAY"

Rating:    User: Universe   2007-06-13T23:59:50.017Z

Tags: Daniel | | | Dennett | | | | | Sagan | Stephen | | Jay | | Gould | | Richard | | Dawkins | | Hawkins | | Albert | | Einstein | | pale | | blue | | dot | | God | | Jesus | Arthur | C. | Clarke hell | hate |

God, the Universe, & Everything Else "Web Links"

God,_the_Universe,_&_Everything_Else_Web_LinksStephen Hawking - God, the Universe, & Everything Else / Carl Sagan, Arthur C. Clarke (1988) British journalist and TV host Magnus Magnusson tackles big questions about our universe in this educational colloquium that brings together three of the 20th century's leading scientific thinkers: theoretical physicist Stephen Hawking, astronomer Carl Sagan and author Arthur C. Clarke. They explore everything from the Big Bang Theory to the expansion of the universe, black holes, extraterrestrial life and the origins of creativity. NOTE: Becasue this is copyrighted program, I can only post a few clips. But here are a few links on were you can rent or buy it. http://www.netflix.com/Movie/70062143?trkid=73 http://www.amazon.com/Stephen-Hawking-Universe-Everything-Arthur/dp/B000LP6KQW http://www.cduniverse.com/productinfo.asp?pid=7360416 http://search.reviews.ebay.com/God-The-Universe-and-Everything-Else-Stephen-Hawking_UPC_032031414990_W0QQfvcsZ1177QQsoprZ56799223

Rating:    User: Universe   2007-08-06T21:56:05.05Z

Tags: Hawking | (1988) | big | bang |

Introduction to the Richard Dawkins Foundation

Introduction_to_the_Richard_Dawkins_FoundationVisit www.richarddawkins.net for more information. "The enlightenment is under threat. So is reason. So is truth. So is science, especially in the schools of America. I am one of those scientists who feels that it is no longer enough just to get on and do science. We have to devote a significant proportion of our time and resources to defending it from deliberate attack from organized ignorance. We even have to go out on the attack ourselves, for the sake of reason and sanity. But it must be a positive attack, for science and reason have so much to give. They are not just useful, they enrich our lives in the same kind of way as the arts do. Promoting science as poetry was one of the things that Carl Sagan did so well, and I aspire to continue his tradition." - Richard Dawkins

Rating:    User: MT47   2007-01-14T15:03:56.497Z

Tags: RDF | RDFRS | Science | Reason | Religion |

Cosmos - The Speed Of Light PT 2

Cosmos_-_The_Speed_Of_Light_PT_2Carl Explains The Why's Etc Of Light, On A Bike And A Scooter

Rating:    User: pyoa2004   2008-06-14T12:46:30.577Z

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Cosmos - The Cosmic Calander

Cosmos_-_The_Cosmic_CalanderAll Of Time, From The Big Bang Till Now, Condenced And Explained As One Year.

Rating:    User: pyoa2004   2008-06-15T01:05:17.7Z

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Cosmos - The Origin Of Life

Cosmos_-_The_Origin_Of_LifeOne Of The Best Parts With The Imagination Running Wild Of The Possibilities Of Other Life

Rating:    User: pyoa2004   2008-06-15T14:46:39.16Z

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A Chick Track - Big Daddy?

A_Chick_Track_-_Big_Daddy?"In my field of evolutionary biology, the most prominent urban legend—another 'truth' known by 'everyone'—holds that evolution may well be the way of the world, but one has to accept the idea with a dose of faith because the process occurs far too slowly to yield any observable result in a human life-time. Thus, we can document evolution from the fossil record and infer the process from the taxonomic relationships of living species, but we cannot see evolution on human timescales 'in the wild.' In fairness, we professionals must shoulder some blame for this utterly false impression about evolution's invisibility in the here and now of everyday human life. Darwin himself—although he knew and emphasized many cases of substantial changes in human time (including the development of breeds in his beloved pigeons—tended to wax eloquent about the inexorable and stately slowness of natural evolution. In a famous passage from the Origin of Species, he even devised a striking metaphor about clocks to underscore the usual invisibility: It may be said that natural selection is daily and hourly scrutinizing, throughout the world, every variation, even the slightest; rejecting that which is bad, preserving and adding up all that is good; silently and invisibly working. . . . We see nothing of theses slow changes in progress until the hand of time has marked the long lapse of ages. "Nonetheless, the claim that evolution must be too slow to see can only rank as an urban legend—although not a completely harmless tale in this case, for our creationists incubi can then use the fallacy as an argument against evolution at any scale, and many folks take them seriously because they just 'know' that evolution can never be seen in the immediate here and now. In fact, a precisely opposite situation prevails: biologists have documented a veritable glut of cases for rapid and eminently measurable evolution on timescales of years and decades." `Stephen Jay Gould "The Paradox of the Visibly Irrelevant"

Rating:    User: Universe   2007-06-19T09:44:19.467Z

Tags: chick | track | rickard | atheist |

Carl Sagan's PBD Episode 1: "Wanderers" (teaser)

Carl_Sagans_PBD_Episode_1:_Wanderers_(teaser)Teaser trailer for episode one of Pale Blue Dot, "Wanderers", available Saturday, July 7th on Google Video... Details... http://kasranov.blogspot.com

Rating:    User: Kasranov   2007-07-08T16:17:04.33Z

Tags: Pale | Blue | Dot | Kasranov |

Carl Sagan on Planet Venus

Carl_Sagan_on_Planet_Venushttp://www.FreeScienceLectures.com Sagan was central to the discovery of the high surface temperatures of the planet Venus. In the early 1960s, no one knew for certain the basic conditions of Venus' surface and Sagan listed the possibilities in a report later depicted for popularization in a Time-Life book, Planets - his own view was that the planet was dry and very hot, as opposed to the balmy paradise others had imagined. He had investigated radio emissions from Venus and concluded that there was a surface temperature of 500 C (900 F). As a visiting scientist to NASA's Jet Propulsion Laboratory, he contributed to the first Mariner missions to Venus, working on the design and management of the project. Mariner 2 confirmed his views on the conditions of Venus in 1962. This video shows an interview with him before the first missions to Venus in 1960 or 1961. --- It's Never too Late to Study: http://www.FreeScienceLectures.com --- Notice: This video is copyright by its respectful owners. The website address on the video does not mean anything. ---

Rating:    User: FreeScienceLectures   2007-06-07T13:38:45.837Z

Tags: venus | nasa | 1960 |

Pale Blue Dot (Edited by Jonathan Man)

Pale_Blue_Dot_(Edited_by_Jonathan_Man)Pale Blue Dot by Carl Sagan. Edited by Jonathan Man

Rating:    User: jonathanlman   2007-10-11T20:21:19.51Z

Tags: astronomy |

Ghost

GhostHuman consciousness arose but a minute before midnight on the geological clock. Yet we mayflies try to bend an ancient world to our purposes, ignorant perhaps of the messages buried in its long history. Let us hope that we are still in the early morning of our April day. ~Stephen Jay Gould Music, Clutch - Ghost The leather soles go shuffling in, Stinking of smoke and ten cent gin. Now who will toast our noble host that has this morning given up the ghost? The wooden coffer hand to hand. Kind words are offered, silent prayers. But she is satisfied the most while stabbing madly at the roast. The rib of Adam, the eyes of Eve. The sons of Cain receive no reprieve. The creditor rides with his men. The death of debtors he won't forgive. They repossess his silver eyes, now in the potter's field he lies. The rib of Adam, the eyes of Eve. The sons of Cain receive no reprieve. Waiting for a dead man's shoes. Have you heard the latest news? Lazarus is back from the dead looking as one would expect. Dripping with the waters of Sheol. Babbling about body and soul. And Then he found his wife in their bed buck naked and already wed. The tax collector beneath his sheets. The door swings open. Floorboards creak. Now who will toast our noble host who has this morning given up the ghost? The rib of Adam, the eyes of Eve. The sons of Cain receive no reprieve.

Rating:    User: Universe   2007-07-06T06:44:06.24Z

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Richard Dawkins is a spiritual man.

Richard_Dawkins_is_a_spiritual_man.Science is not only compatible with spirituality; it is a profound source of spirituality. -Carl Sagan

Rating:    User: Universe   2007-06-14T02:29:57.577Z

Tags: | | | | | | | | | | Gold | | selfish | | gene | | | | universe |

We are Here: The Pale Blue Dot

We_are_Here:_The_Pale_Blue_DotCarl Sagan's infamous speech

Rating:    User: tjdr59   2008-03-16T07:08:02.023Z

Tags: small | speech |

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