Showing posts with label SETI. Show all posts
Showing posts with label SETI. Show all posts

Sunday, March 14, 2010

Carl Sagan’s Contact



As we approach the fiftieth anniversary of the establishment of the Search for Extraterrestrial Intelligence (S.E.T.I.) as a bona fide branch of legitimate scientific inquiry we cannot help but wonder how "First Contact" will occur and what effect this will have on humanity.

Today we explore this exciting possibility through the vision of Dr. Carl Sagan as outlined in his first and only science fiction novel “Contact” published in 1985 and the film adaptation released twelve years later.


The novel and book both present a unique and wonderful vision of a common science fiction theme about the first meeting between humans and extraterrestrial life. Sagan expands on this theme in his novel and hints at the possibility of an even higher overarching intelligence that existed before the creation of the Cosmos and responsible for bringing into being. Unfortunately in the motion picture this was only touched upon obliquely.


Eleanor "Ellie" Arroway is the director of "Project Argus," in which scores of radio telescopes in New Mexico have been dedicated to the search for extraterrestrial intelligence (SETI).

Before long, the project does, indeed, discover the first confirmed communication from extraterrestrial beings, a repeating series of the first 261 prime numbers (a sequence of prime numbers is a commonly predicted first message from alien intelligence, since mathematics is considered a "universal language," and it is conjectured that algorithms that produce successive prime numbers are sufficiently complicated so as to require intelligence to implement them). Further analysis of the message reveals that two additional messages are embedded in the signal. One of these messages is the detailed instructions of a machine that transports professor Arroway on an incredible odyssey to the heart of the Milky Way Galaxy and a face to face encounter with the intelligent beings that sent the message.

In a kind of postscript, Ellie, acting upon a suggestion by the senders of the Message, works on a program which computes the digits of π to record lengths and in different bases. Very, very far from the decimal point (ten to the twentieth power) and in base 11, it finds that a special pattern does exist when the numbers stop varying randomly and start producing 1s and 0s in a very long string. The string's length is the product of 11 prime numbers. The 1s and 0s when organized as a square of specific dimensions form a rasterized circle.

The extraterrestrials suggest that this is an artist's signature, woven into the very fabric of space. It is another Message, one from the universe's creator. Yet the extraterrestrials are just as ignorant to its meaning as Ellie, as it could be still some sort of a statistical anomaly. They also make reference to older artefacts built from space time itself (namely the wormhole transit system) abandoned by a prior civilization. A line in the book suggests that the image is a foretaste of deeper marvels hidden even further within Pi. This new pursuit becomes analogous to SETI; it is another search for meaningful signals in apparent noise. This idea, among other plot points, was omitted from the film version.


While both the novel and film stand on their own merits one wonders if the film could have attained the same distinction as a cult classic like Stanley Kubrick’s “2001” if this latter theme were worked into the motion picture.


Contact The Motion Picture




Saturday, January 3, 2009

Life in Darwin’s Universe

In order to kick off a year of celebration to commemorate the bicentennial of Charles Darwin’s birth on 12th February, 1809 and the 150th anniversary of Darwin’s publication of “On the Origin of Species” on 24th November, 1859 today on Cosmic Visions we are going to explore the possibility of life elsewhere in the Cosmos.

Whatever form life takes on elsewhere in the cosmos we can be reasonably certain that the same inexorable laws of evolution through natural selection that shaped life on Earth will shape it elsewhere. Natural selection has given rise to an incredible diversity of life on this planet. Over the past four billion years, this has resulted in a plethora of living organisms each adapted and specialize to occupy a particular ecological niche and eventually the emergence of new species. If life exists elsewhere we can very well expect it to reflect and perhaps surpass the almost inconceivable variety of life on our world.

Yet when studying the wonderful history of life on our planet we are faced with a spectacular conundrum. Natural selection has shaped and sculpted an incredible life form that appears to be able to adapt to life in every conceivable ecological niche. A life form that is on the verge in directing the course of its own evolutionary future and also of creating life forms that will transcend biology in silico. And, that life form is us – Homo sapiens. We are the pioneers of a whole new form of evolution which is distinctly non-biological. This new realm of evolution is Cultural Evolution. It is this new dominion of evolution that has made us the most dominant life form on this planet and has set us on a trajectory that will one day take us out amongst the stars. Will we one day encounter other such life forms or their living machines out amongst the starry ferment?

It is indeed very conceivable that the first intelligent life forms that we will encounter will be living machines capable of self replication and also transcending Darwinian evolution. These living machines may very well continue to evolve in the most non-Darwinian of ways via Lamarckian evolution.


"...Self-reproducing probes or robots, free from such restraints [Darwinian evolution], could advance by Lamarckian evolution. That is, they could pass on directly any acquired abilities and desired improvements to the next generation, and evolve rapidly capabilities beyond the reach of biological beings."
- Edward Ashpole, The Search for Extra-terrestrial Intelligence

Then the future struggle for existence may indeed be between the biological and non-biological entities played out on a galactic scale. We will explore these questions in a later series of articles. In the meantime enjoy today’s video offering as we explore the possibility of life in Darwin’s Universe.


The Universe - Alien Faces

They roam the planetary surface, fly underwater and soar through the heavens. But this is no wildlife safari on planet Earth; this is an expedition of astronomical proportions. When the human race discovers it is not alone, what will our cosmic brothers and sisters look like? To answer this question leading astronomers and Astrobiologists have applied the principals of evolution and physics to five types of alien worlds likely to be found in the cosmos. These are the creatures that could be out there. Prepare to take an intergalactic safari and peer directly into the eyes of alien faces.








Exploring Space - The Quest for Life

This film takes a great comprehensive look at space travel, life on other planets, and the origins of life on Earth. It does a great job of exploring such topics as Pasteur's experiments with wine barrels, the origins of life on earth, recent discoveries of life in expected places on earth, dust from comets, Jupiter's moon Europa, human's endurance in space, terraforming prospects on Mars, the requirements of a mission to Mars. It's strength is the effective way it illustrates very complicated concepts using great interviews, interesting comparisons, and good visual effects. Unlike other documentaries of this type, this one goes into greater depth with various concepts and ideas.








Sunday, May 11, 2008

The Search for Extra-solar Planetary Systems

Had Carl Sagan been alive today he would have been extremely thrilled with the fact that new extra solar planetary systems are being discovered almost on a weekly basis. New planets mean more potential abodes for life and perhaps consciousness elsewhere in the Milky Way Galaxy and beyond.


Today on Cosmic Visions I will be posting five videos concerning the search for extra-solar planetary systems and the concomitant search for life and sentience throughout the Cosmos. Also as our space missions to the outer solar system have revealed there are over a hundred other exotic worlds in our solar system that hold the promise of life - the moons of Jupiter, Saturn Uranus and Neptune, each a world in its own right. So join me on the most exciting odyssey made possible by the science of our age as we explore a plethora of Alien Worlds and Moons and embark on an Alien Safari.


Finally we look at the latest tool to be deployed in the search for worlds very much like our own- NASA’s NASA Kepler mission, scheduled to launch in February 2009. Also take the opportunity to become part of this great adventure and have your name placed on board the spacecraft that discovers the first known Earth-like planet beyond our solar system.




The Universe - Alien Planets





The Universe - Alien Moons






The Universe Astrobiology





The Kepler Mission






Space Mysteries - Alien Safari