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Extraterrestrial Life

Extraterrestrial Life
The official U.S. government position on extraterrestrial life and the three major efforts to search for it. Clockwise from top left: The development and testing of hypotheses on extraterrestrial life is known as "exobiology" or "astrobiology", although astrobiology also considers Earth-based life in its astronomical context. Many scientists consider extraterrestrial life plausible, but there is no direct evidence of its existence.[2] Since the mid-20th century, there has been an ongoing search for signs of extraterrestrial life, from radios used to detect possible extraterrestrial signals, to telescopes used to search for potentially habitable extrasolar planets.[3] It has also played a major role in works of science fiction. Science fiction works, especially Hollywood's involvement, has increased over the years the public's interest in the possibility of extraterrestrial life. §Background §Possible basis §Biochemistry All life on Earth is based upon 26 chemical elements.

http://en.wikipedia.org/wiki/Extraterrestrial_life

Related:  The Universe: Cosmology, Astronomy & Astrobiology

Finding Life Beyond Earth PBS Airdate: October 19, 2011 NARRATOR: Is Earth the only planet of its kind in the universe, or is there somewhere else like this out there? Is there life beyond Earth? The search for alien life is one of humankind's greatest technological challenges. Planetary habitability Understanding planetary habitability is partly an extrapolation of the Earth's conditions, as this is the only planet currently known to support life. Planetary habitability is the measure of a planet's or a natural satellite's potential to develop and sustain life. Life may develop directly on a planet or satellite or be transferred to it from another body, a theoretical process known as panspermia. As the existence of life beyond Earth is currently uncertain, planetary habitability is largely an extrapolation of conditions on Earth and the characteristics of the Sun and Solar System which appear favourable to life's flourishing—in particular those factors that have sustained complex, multicellular organisms and not just simpler, unicellular creatures. Research and theory in this regard is a component of planetary science and the emerging discipline of astrobiology. Suitable star systems[edit]

10 Mega-Construction Projects That Could Save the Environment — and the Economy Solar and Wind power? How quaint. Fusion? Is this a science fiction website? Photonic Inversion is the real future of renewable energy. Learn to Fight Capitalism at the School of Disobedience Jani Leinonen, “School of Disobedience” (2015) (courtesy the artist) A forthcoming exhibition in Helsinki will offer visitors an education grounded in disobedience and protest, equipping them with tools and ideas to challenge society’s injustices and fight for change. The School of Disobedience, which opens on September 4 at Finland’s contemporary art museum, Kiasma, is part art show, part educational institution: visitors to the museum are treated as students, receiving lessons from the more than 100 works on view or through a series of workshops with curricula that encourage civil disobedience through different media. Conceived by Finnish artist Jani Leinonen, whose own work is very critical of capitalist systems, the school intends to instill in the public — particularly young people — an urgent desire for social justice. Jani Leinonen, “School of Disobedience,” 2015 (courtesy the artist) (click to enlarge) Will New Guggenheim Force Closing of Helsinki Art Museums?

Astrobiology: Life in the Universe How Did Life Become Complex? A species of yeast (Saccharomyces cerevisiae) seen in a scanning electrograph image. Credit: NASASource: [astrobio.net The evolution of multicellular life on Earth happened with a number of key transitions from simple organisms to complex. Could the same transitions happen on other worlds? Ancient astronauts Ancient astronauts or ancient aliens[1] is a pseudo-scientific hypothesis that posits intelligent extraterrestrial beings have visited Earth and made contact with humans in antiquity and prehistory.[2] Proponents suggest that this contact influenced the development of human cultures, technologies, and religions. A common claim is that deities from most, if not all, religions are actually extraterrestrial in nature, and that such visitors' advanced technologies were wrongly understood by primitive men as evidence of divine status.[3][4] Proposers subscribing to the resultant paleocontact hypothesis proposal have popularized, particularly in the latter half of the 20th century, include Erich von Däniken, Giorgio A. Tsoukalos, Zecharia Sitchin, Robert K. G. Overview[edit]

Space exposure Space exposure is the subjection of a human to the conditions of outer space, without protective clothing and beyond the Earth’s atmosphere in a vacuum. Explanation and history[edit] For the effect of rapid decompression to vacuum conditions, see the main article at Uncontrolled decompression. Ebullism, hypoxia, hypocapnia and decompression sickness[edit] Few humans have experienced these four conditions.

Banksy’s New Apocalyptic Theme Park Is Designed to Disappoint A glitchy Ariel is one of the Banksy works that will greet crowds to Dismaland. (all images courtesy Christopher Jobson of Colossal) Today, it was officially announced that British artist Banksy has constructed a dystopian riff on Disneyland in a derelict seaside resort in Weston-super-Mare, England.

The Devil’s Chessboard: Allen Dulles, the CIA, and the Rise of America’s Secret Government This is a bold and profoundly important book, not only for the portrait of the evil spymaster Allen Dulles, but even more so for its examination of the legacy he spawned – the creation of a cabal hidden behind the public face of the United States government that secretly runs the country today on behalf of wealthy elites. The psychopathic Allen Dulles was the enforcer for this group, called “the power elite” by C. Wright Mills in the 1950s. In recent years, especially since September 11, 2001, as its power has expanded, it has been given different names – the deep state, the national security state, deep politics,etc. – but that has not diminished its power one jot. Like a patient who goes to a doctor seeking a label for vague yet disturbing symptoms, people may feel relief from the naming, but the dis-ease continues until the root cause is eliminated. Aye, there’s the rub!

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