DIRECTED PANSPERMIA PDF

Search directed panspermia Directed panspermia is the idea that life might have been intentionally spread throughout space and seeded on the surface of other worlds by a guiding intelligence. A detailed version of this hypothesis was put forward in by the molecular biologists Francis Crick codiscoverer of the structure of DNA and Leslie Orgel. The probability of successful seeding would be greatly increased, they pointed out, if the fertilization were carried out deliberately by an existing technological civilization. Their argument depended first upon demonstrating that it was possible for an advanced extraterrestrial civilization to have developed in the Galaxy before life first appeared on Earth.

Author:Kerg Gardalrajas
Country:Estonia
Language:English (Spanish)
Genre:Personal Growth
Published (Last):10 December 2013
Pages:27
PDF File Size:2.36 Mb
ePub File Size:2.31 Mb
ISBN:757-9-98773-133-3
Downloads:27365
Price:Free* [*Free Regsitration Required]
Uploader:Dazshura



A co-discoverer of the double helical structure of the DNA molecule, Crick found it impossible that the complexity of DNA could have evolved naturally. Crick posed that small grains containing DNA, or the building blocks of life, could be loaded on a brace of rockets and fired randomly in all directions. Crick and Orgel estimated that a payload of one metric ton could contain micro-organisms organized in ten or a hundred separate samples.

This would be the best, most cost effective strategy for seeding life on a compatible planet at some time in the future. The strategy of directed panspermia may have already been pursued by an advanced civilization facing catastrophic annihilation, or hoping to terraform planets for later colonization.

Support for Directed Panspermia Directed panspermia from Earth to new solar systems has been proposed to expand life in the Universe. For example, microbial payloads launched by solar sails at speeds up to 0.

Fleets of microbial capsules can be aimed at clusters of new stars in star-forming clouds where they may land on planets, or captured by asteroids and comets and later delivered to planets.

Payloads may contain extremophiles for diverse environments and cyanobacteria similar to early microorganisms. Hardy multicellular organisms rotifer cysts may be included to induce higher evolution. Mautner, M.

Strategies and motivation for seeding star-forming clouds", J. British Interplanetary Soc. There is a chance that humans, at some point in our space explorations, may unintentionally transport microorganisms on manned craft or unmanned probes to other other planetary bodies. Contamination such as this distorting data is a concern among space researchers seeking to find extraterrestrial life. Even the best sterilization techniques can not guarantee that organic materials will not be unintentionally spread.

Deliberate directed panspermia by humans would seed planetary bodies, securing the of future life. This intentional action would need to be balanced against interference with the quest to find extraterrestrial life. This interference can be minimized by targeting remote solar systems where life would not have evolved yet. Seeding a few hundred young solar systems would secure future life while leaving billions of stars pristine for exploration. Stephen Hawking explains how life may have began on Earth, and turns to evolution to determine what extraterrestrial life may look like.

All rights reserved. Panspermia theory: the origin of life on Earth and the transfer of life throughout the Universe. Three Rocklin singing lesson popular variations of the hypothesis are directed panspermia - the intentional transfer of life to other planets by intelligent life; lithopanspermia - extremophile bacteria traveling through space within a meteorite, asteroid or comet from a planet in one solar system to a planet in another solar system; and ballistic panspermia - extremophile microbes traveling through space within meteorites, asteroids or comets between planets Eastern Spirituality within the same solar system, such as from Mars to Earth.

JA SAM ZLATAN IBRAHIMOVIC KNJIGA PDF

directed panspermia

A co-discoverer of the double helical structure of the DNA molecule, Crick found it impossible that the complexity of DNA could have evolved naturally. Crick posed that small grains containing DNA, or the building blocks of life, could be loaded on a brace of rockets and fired randomly in all directions. Crick and Orgel estimated that a payload of one metric ton could contain micro-organisms organized in ten or a hundred separate samples. This would be the best, most cost effective strategy for seeding life on a compatible planet at some time in the future. The strategy of directed panspermia may have already been pursued by an advanced civilization facing catastrophic annihilation, or hoping to terraform planets for later colonization.

EUMEX 400A PDF

Panspermia

Panspermia and the Origin of Life on Earth Panspermia is a Greek word that translates literally as "seeds everywhere". The panspermia hypothesis states that the "seeds" of life exist all over the Universe and can be propagated through space from one location to another. Some believe that life on Earth may have originated through these "seeds". Mechanisms for panspermia include the deflection of interstellar dust by solar radiation pressure and extremophile microorganisms traveling through space within an asteroid, meteorite or comet. History of Panspermia The first known mention of the concept of panspermia was in the writings of the Greek philosopher Anaxagoras BC — BC , although his concept differs from the modern theory: All things have existed from the beginning. But originally they existed in infinitesimally small fragments of themselves, endless in number and inextricably combined. All things existed in this mass, but in a confused and indistinguishable form.

EPOPEA LUI GHILGAMES PDF

The Origins of Directed Panspermia

Print Advertisement The Earth is beaming with life and yet there is no consensus on how life arose or what life is. Life Itself. Questions about the origin of life became more prevalent after Pasteur and others showed that life did not arise spontaneously. The discovery that the raw components of life are present throughout the universe suggests that life could exist elsewhere, and that the origin of life as we know it may have depended on materials that arrived on Earth via inter-stellar travel.

Related Articles