Take part & help - World Wide Astronomy Efforts. SETI. UFO's. Drake equation. The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy.
The equation was written in 1961 by Frank Drake not for purposes of quantifying the number of civilizations,[1] but intended as a way to stimulate scientific dialogue at the world's first SETI meeting, in Green Bank, West Virginia. The equation summarizes the main concepts which scientists must contemplate when considering the question of other radio-communicative life.[1] The Drake equation has proved controversial since several of its factors are currently unknown, and estimates of their values span a very wide range.
This has led critics to label the equation a guesstimate, or even meaningless. History[edit] In September 1959, physicists Giuseppe Cocconi and Philip Morrison published an article in the journal Nature with the provocative title "Searching for Interstellar Communications The equation[edit] Is There Life Out There Somewhere In The Universe. Are there alien civilizations out there?
— Sorry this video is no longer available Are there alien civilizations out there? Sorry the above video is no longer available; and the author has been unable to find a satisfactory substitute video. In reality, we have hardly begun to explore our galaxy for intelligent life… the stars are simply too numerous and many are hidden by the mass or our own galaxies stars, dust and gas as we orbit on one of its edges. Take a moment to check out how big our universe really is Shortened link to this video: Take a moment to check out how big our universe really is [music, astronomy pictures]: Extraterrestrial life. Evolution Predictable Everywhere in the Universe, Scientist Says. If the history of life on Earth could be rewound and replayed, many of the same innovations would reappear, although at different times and in slightly different forms.
This is the conclusion of Geerat Vermeij, a paleontologist at the University of California, Davis. Vermeij's views imply that evolution is in some ways predictable and that life on other planets might not be so alien after all. "Some traits are so advantageous under so many circumstances, or arise so relatively easily by virtue of self-organization, that you're likely to see the same things again and again," Vermeij told LiveScience. Among the innovations that evolution might find irresistible: photosynthesis, plant seeds, mineralized bones, intelligence and language. Carl Sagan on Drake Equation.
Kardashev scale civilizations, type 0,1,2,3 civilizations and beyond. Kardashev scale. The Kardashev scale is a method of measuring a civilization's level of technological advancement, based on the amount of energy a civilization is able to utilize.
The scale has three designated categories called Type I, II, and III. Alien Civilizations in Universe. Introduction This calculation is just a rough one because galaxies vary a lot.
There are also things called globular clusters that can contain hundreds of thousands of stars. I will be talking about type 0, type 1, type 2 and type 3 civilizations here. You might want to watch this video to understand exactly what that means: Kardashev scale civilizations, type 0,1,2,3 civilizations and beyond. CIVILISATION DE TYPE III !!! The future of civilization & alien probes on moons. How Far Have Radio Signals Traveled From Earth? The expanding sphere of radio signals traveling outward from the earth is often portrayed in TV shows and Hollywood movies to be like a time machine.
The further you get from earth, the further back you go in the history of radio and TV broadcasts. Today we explore how far these signals have traveled, and more importantly, if radio signals actually work that way. Earth’s Expanding Radio Bubble. The Fermi Paradox.
SETI, the Fermi Paradox and The Singularity: Why our search for extraterrestial intelligence has failed. Faughnan Home | Contact Info | Site Contents | Search Rev: 30 May 2008.
Introduction The Fermi Paradox was first stated by Enrico Fermi in 1950 during a lunch time conversation. Fermi, a certified genius, used some straightforward math to show that if technological civilizations were common and moderately long-lived, then the galaxy ought to be fully inhabited [10]. The vast distances of interstellar space should not be a significant barrier to any such civilization --assuming exponential population growth and plausible technology. "Contact" should thus be completely inevitable; we ought to find unavoidable evidence of "little green men" all about us. We don't. This paradoxical failure is sometimes called "The Great Silence". Technology civilizations may rarely form. What would cause all technological civilizations everywhere to lose interest in colonizing the universe -- despite whatever biologic programming they started with?
Proposition: The transcendental solution to the Fermi Paradox. Fermi paradox. A graphical representation of the Arecibo message – Humanity's first attempt to use radio waves to actively communicate its existence to alien civilizations The Fermi paradox (or Fermi's paradox) is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial civilization and humanity's lack of contact with, or evidence for, such civilizations.[1] The basic points of the argument, made by physicists Enrico Fermi and Michael H.
Hart, are: The Sun is a young star. Exoplanet found… from another galaxy!! Today, astronomers announced that they have found a new exoplanet, a planet orbiting another star.
Nearly 500 exoplanets have been found in the past 15 years, so what’s the big deal, you may ask? The big deal is that this planet and star are from another galaxy! "ET Technology Could Appear as Natural Objects in the Universe" According to the British physicist Stephen Wolfram, intelligent life is inevitable.
But there is a hitch. Although intelligent life is inevitable, we will never find it -at least not by looking out in the Milky Way. As evidence Wolfram points out In order to compress more and more information into our communication signals - be they mobile phone conversations or computer- we remove all redundancy or pattern. If anything in a signal repeats, then clearly it can be excised. But this process of removing any pattern from a signal make it look more and more random - in fact, pretty much like the random radio "noise" that rains down on Earth coming from stars and interstellar gas clouds. According to Wolfram, if someone beamed our own 21st-century communication signals at us from space we would be hard pressed determining whether they were artificial or natural. ET artifacts coordinated by computers would look far more like a natural onject.
Casey Kazan via ] M. Alien Life ☆ Team Curated.