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it is about the origin of life on earth and how life came into existence
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How did life come into
existence ?
BASED ON WHICH THEORY?
1. H.E.Ritcher-meteors/comets theory
2. Gyon De- moon theory
3.Svante Arrhenius- panspermia theory
It’s THE PANSPERMIA theory!
-The theory which states that life on earth originated from microorganisms present in outer space.
History of the
Panspermia theory
Types of panspermia theory
1.Lithopanspermia
2.Ballistic panspermia
3.Directed panspermia
METEOR
The microorganisms and amino acids were supposed to be seeded on the
meteors which came from other planets to earth!
WHY ONLY EARTH
ATMOSPHERE
CLIMATE
WATER
SUN
EVIDENCE
Bacteria can survive harsh environment of space like
Ultra violet radiationProtons bombardmentcold
Meteorites contain:
Amino acids (left handed in helicity)
Bacteria
Carbon are protected inside the rocks.
Bacteria can live for a long time in sleep state until awakened.
Recent supportMeteors about 15 million years aged was found in Antarctica in 1984 by a team of scientists of annual United States government mission to search for meteors.
MODERN PANSPERMIA
Meteors act as the delivery devices
Possibilities of earth launching satellites
capable of transferring microorganisms in the
near future!!
REFERENCE
Challenges to darwinism-panspermia and the theories of evolutionBy Gerry Zeitlin
PRESENTED BY
FATIMA SHIVANI POONAM SAICHANDER
THANK YOU…