Ancient astronauts

Ancient astronauts” (or “ancient aliens”) refers to the pseudoscientific idea that intelligent extraterrestrial beings visited Earth and made contact with humans in antiquity and prehistoric times. Proponents suggest that this contact influenced the development of modern cultures, technologies, and religions. A common position is that deities from most, if not all, religions are extraterrestrial in origin, and that advanced technologies brought to Earth by ancient astronauts were interpreted as evidence of divine status by early humans.

Ancient Astronauts Theory - http://Alamongordo.Com

The idea that ancient astronauts existed is not taken seriously by academics, and has received no credible attention in peer reviewed studies. Well-known proponents in the latter half of the 20th century who have written numerous books or appear regularly in mass media include Erich von Däniken, Zecharia Sitchin, Robert K. G. Temple, Giorgio A. Tsoukalos and David Hatcher Childress.

Proponents of the ancient astronaut hypotheses often maintain that humans are either descendants or creations of extraterrestrial intelligence (ETI) who landed on Earth thousands of years ago. An associated idea is that humans evolved independently, but that much of human knowledge, religion, and culture came from extraterrestrial visitors in ancient times, in that ancient astronauts acted as a “mother culture”. Some ancient astronaut proponents also believe that travelers from outer space, referred to as “astronauts” (or “spacemen”) built many of the structures on Earth (such as Egyptian pyramids and the Moai stone heads of Easter Island) or aided humans in building them.
Various terms are used to reference claims about ancient astronauts, such as ancient aliens, ancient ufonauts, ancient space pilots, paleocontact, astronaut- or alien gods, or paleo- or Bible-SETI (search for extraterrestrial intelligence)

Ancient astronauts hypothesis of creation

Proponents argue that the evidence for ancient astronauts comes from documentary gaps in historical and archaeological records, and they also maintain that absent or incomplete explanations of historical or archaeological data point to the existence of ancient astronauts. The evidence is argued to include archaeological artifacts that they deem anachronistic, or beyond the accepted technical capabilities of the historical cultures with which they are associated. These are sometimes referred to as “out-of-place artifacts”; and include artwork and legends which are interpreted in a modern sense as depicting extraterrestrial contact or technologies.

Scholars have responded that gaps in contemporary knowledge are not evidence of the existence of ancient astronauts, and that advocates have not provided any convincing anecdotal or physical evidence of an artifact that might conceivably be the product of ETI contact. According to astrophysicist Carl Sagan, “In the long litany of ‘ancient astronaut’ pop archaeology, the cases of apparent interest have perfectly reasonable alternative explanations, or have been misreported, or are simple prevarications, hoaxes and distortions”

Hypothesis origins and proponents

Paleocontact or “ancient astronaut” narratives first appeared in the early science fiction of the late 19th to early 20th century. The idea was proposed in earnest by Harold T. Wilkins in 1954; it received some consideration as a serious hypothesis during the 1960s. Critics of the theory emerged throughout the 1970s, discrediting Von Daniken’s theory. Ufologists separated the idea from the UFO controversy. By the early 1980s little remaining support of the theory could be found.

Shklovski and Sagan

In their 1966 book Intelligent Life in the Universe, astrophysicists I. S. Shklovski and Carl Sagan devote a chapter to arguments that scientists and historians should seriously consider the possibility that extraterrestrial contact occurred during recorded history. However, Shklovski and Sagan stressed that these ideas were speculative and unproven.

Shklovski and Sagan argued that sub-lightspeed interstellar travel by extraterrestrial life was a certainty when considering technologies that were established or feasible in the late 1960s; that repeated instances of extraterrestrial visitation to Earth were plausible; and that pre-scientific narratives can offer a potentially reliable means of describing contact with aliens.

Sagan illustrates this hypothesis by citing the 1786 expedition of French explorer Jean-François de Galaup, comte de La Pérouse, which made the earliest first contact between European and Tlingit cultures. The contact story was preserved as an oral tradition by the preliterate Tlingit. Over a century after its occurrence it was then recorded by anthropologist George T. Emmons. Although it is framed in a Tlingit cultural and spiritual paradigm, the story remained an accurate telling of the 1786 encounter.

According to Sagan, this proved how “under certain circumstances, a brief contact with an alien civilization will be recorded in a re-constructible manner. He further states that the reconstruction will be greatly aided if 1) the account is committed to written record soon after the event; 2) a major change is effected in the contacted society; and 3) no attempt is made by the contacting civilization to disguise its exogenous nature.”

Additionally, Shklovski and Sagan cited tales of Oannes, a fishlike being attributed with teaching agriculture, mathematics, and the arts to early Sumerians, as deserving closer scrutiny as a possible instance of paleocontact due to its consistency and detail.

In his 1979 book Broca’s Brain, Sagan suggested that he and Shklovski might have inspired the wave of 1970s ancient astronaut books, expressing disapproval of “von Däniken and other uncritical writers” who seemingly built on these ideas not as guarded speculations but as “valid evidence of extraterrestrial contact.” Sagan argued that while many legends, artifacts, and purported out-of-place artifacts were cited in support of ancient astronaut hypotheses, “very few require more than passing mention” and could be easily explained with more conventional hypotheses. Sagan also reiterated his earlier conclusion that extraterrestrial visits to Earth were possible but unproven, and improbable.

Erich von Däniken

Erich von Däniken was a leading proponent of this hypothesis in the late 1960s and early 1970s, gaining a large audience through the 1968 publication of his best-selling book Chariots of the Gods? and its sequels.

According to von Däniken, certain artifacts require a more sophisticated technological ability in their construction than that which was available to the ancient cultures who constructed them. Von Däniken maintains that these artifacts were constructed either directly by extraterrestrial visitors or by humans who learned the necessary knowledge from said visitors. These include Stonehenge, Pumapunku, the Moai of Easter Island, the Great Pyramid of Giza, and the ancient Baghdad electric batteries.

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  • Evidence cited by proponents

Source : Wikipedia

 

New Earth ? Potentially habitable planet discovered !

A New Earth ?

Potentially habitable planet discovered orbiting nearby star similar to our sun !

Astronomers have discovered that the closest Sun-like star, Tau Ceti, is orbited by five planets, one of which is in the “habitable range”. If its existence is confirmed, the planet could be the closest potentially life-harboring world to our own.

Tau Ceti, twelve light years away, belongs to the same G-type yellow main-sequence class as our sun, which is relatively rare – only one in 25 stars has the same properties. Its planets were detected not by direct observation, but by calculating the slight gravitational tug these as-yet-unseen planets exert on the orbit of their star. Previously, these star ‘wobbles’ could not be clearly separated due to a multitude of other factors, but scientists at several universities in the UK and the US, say they have cleared the ‘noise’ with sophisticated new techniques and have found five planets.

“This discovery is in keeping with our emerging view that virtually every star has planets, and that the galaxy must have many such potentially habitable Earth-sized planets. They are everywhere, even right next door,” said a statement from Steve Vogt, of the University of California, Santa Cruz, who is the co-author of the discovery, due to be published by the reputable journal Astronomy and Astrophysics.

One of the planets, tentatively designated HD 10700e, appears to be in the so-called “Goldilocks zone”, the relatively small corridor where temperatures are just right for water to remain liquid, and for life to possibly flourish. It is two to six times the size of the Earth, weighs five times as much, and orbits its sun every 168 days. Tau Ceti is three times as far away as the closest star system to our sun, Alpha Centauri. Earlier this year, astronomers confirmed that Alpha Centauri contains a planet, but with a temperature of 1,200 degrees Celsius it is unlikely to host life.

Potentially habitable planet discovered

Yet it is too early to believe that HD 10700e is an Earth-like paradise, waiting for us to arrive. It is not clear what it is made of, and what gases its atmosphere contains. Some scientists remain to be convinced it exists at all.

“They’re really digging deep into the noise here,” Sara Seager, an astronomer at the Massachusetts Institute of Technology, told Science magazine, referring to the techniques used by the scientists. “The astronomical community is going to find it hard to accept planet discoveries from signals so deeply embedded in noise.”

The astronomers behind the project themselves say the discovery may take as long as ten years to confirm, and insist they published the findings to attract others to studying Tau Ceti. But the existence of HD 10700e should be relatively easy to confirm, compared to other potential planet candidates. “Tau Ceti is one of our nearest cosmic neighbours and so bright that we may be able to study the atmospheres of these planets in the not-too-distant future,” James Jenkins, of the Universidad de Chile and the University of Hertfordshire, said in a statement.

There are currently 854 planets confirmed by observation outside our solar system, but only a few of those could potentially support life.