it is about the origin of life on earth and how life came into existence

2. BASED ON WHICH
THEORY?

3. 1. H.E.Ritcher-meteors/comets
theory
2. Gyon De- moon theory
3.Svante Arrhenius- panspermia
theory

4. It’s THE
PANSPERMIA theory!

5. -The theory which
states that life on
earth originated from
microorganisms
present in outer
space.

6. History of the
Panspermia theory

8. Types of panspermia
theory
1.Lithopanspermia
2.Ballistic panspermia
3.Directed panspermia

9. METEOR

10. The microorganisms and amino acids
were supposed to be seeded on the
meteors which came from other
planets to earth!

11. WHY ONLY
EARTH

12. ATMOSPHERE
CLIMATE
WATER
SUN

13. EVIDENCE
Bacteria can survive harsh
environment of space like
Ultra violet radiation
Protons bombardment
cold

14. Meteorites contain:
 Amino acids (left handed in helicity)
Bacteria
Carbon are protected inside the rocks.

15. Bacteria can live for a long
time in sleep state until
awakened.

16. Recent support
Meteors 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.

18. Possibilities of earth
launching satellites
capable of transferring
microorganisms in the
near future!!

19. REFERENCE
Challenges to darwinism-panspermia
and the theories of evolution
By Gerry Zeitlin

20. PRESENTED BY
FATIMA
SHIVANI
POONAM
SAICHANDER

22. THANK YOU…