Panspermia because many eminent scientists have championed this theory, it has now achieved some credibility in the science world. The cosmic ancestry hypothesis about which this site has a large amount of information treats all of evolution, not just the origin of life on earth, as due to interaction with cosmic microorganisms. The panspermia theory opines that life originated from extraterrestrial sources. Panspermia the theory that life came from outer space. Teoria panspermia michelle ramirez paula vaca frank wright panspermia definicion pan. In 1871, lord kelvin supported the same thesis that germs transported by meteorites might have infected the earth thomson. Panspermia theory for lifes origins gets boost from top.
We turn now to the extraordinary, and largely unknown, prehistory of panspermia. Panspermia from ancient greek pan, meaning all, and sperma, meaning seed is the hypothesis that life exists throughout the universe, distributed by space dust, meteoroids, asteroids, comets, planetoids, and also by spacecraft carrying unintended contamination by microorganisms. Biological evidence against the panspermia theory request pdf. Created using powtoon free sign up at create animated videos and animated presentations for free. Directed panspermia from space to seed earth orgel and crick, 1973 or sent from earth to seed other solar systems mautner 1979, 1997 has also been proposed. Distribution may have occurred spanning galaxies, and so may not be. Web to pdf convert any web pages to highquality pdf files while retaining page layout, images, text and. E implicito quindi che cio possa accadere anche su molti altri. A twohour tv program about panspermia and related topics is available on the internet. The panspermia theory, that is the possibility that life arrived on our planet transported by meteorites lithopanspermia, was suggested in 1865 by the german physicist hermann e.
Mar 15, 2016 created using powtoon free sign up at create animated videos and animated presentations for free. It will become clear that considerable uncertainties remain about panspermia, even though significant advances have been made recently. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Panspermia is a theory suggesting that microbes transmitted to earth from space are responsible for the origin of life. Use pdf download to do whatever you like with pdf files on the web and regain control.1051 198 504 97 93 1446 1497 508 69 701 1345 1082 1008 784 1303 1219 721 832 1305 459 193 955 8 933 1338 442 1011 1088 676 1149 180 1011 1081 1382 684 1311 1435 404 706 1220 1268 853 644