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Advances in Astrophysics
AdAp > Volume 6, Number 2, May 2021

Polonnaruwa Stones Revisited – Evidence for Non-Terrestrial Life

Download PDF  (597 KB)PP. 19-25,  Pub. Date:May 20, 2021
DOI: 10.22606/adap.2021.62001

Author(s)
Milton Wainwright, N. Chandra Wickramasinghe
Affiliation(s)
Centre for Astrobiology, University of Ruhuna, Matara, Sri Lanka; Institute for the Study of Panspermia and Astrobiology, Gifu, Japan
Buckingham Centre for Astrobiology, University of Buckingham, UK; Centre for Astrobiology, University of Ruhuna, Matara, Sri Lanka; National Institute of Fundamental Studies, Kandy, Sri Lanka; Institute for the Study of Panspermia and Astrobiology, Gifu, Japan
Abstract
Recent discoveries of highly porous low-density carbonaceous asteroids such as 101955 Bennu and Ryugu have motivated a re-examination of the Polonnaruwa stones which fell in central Sri Lanka on 27 December 2012 following a fireball sighting. Previous discoveries of biological entities including fossilized extinct microorganisms (acritarchs) have tended to be discounted as contaminants for the reason that the stones did not fit into a known meteorite category. In view of the new data from space exploration we re-examine samples of the Polonnaruwa stones and confirm earlier evidence for the existence of diatom frustules and other complex biology.
Keywords
panspermia, astrobiology, comets, stratospheric microbiota
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