16 citations · 25 across the 4 of their papers we have counts for
4 papers
Incidence of low-density meteoroids of the Polonnaruwa type
N. C. Wickramasinghe, J. Wallis, D. H. Wallis +8
The ingress of micrometeorites of cometary origin with densities below ~ 1 g cm-3 into the Earth could average at least 5 tonne per day. Although much of this is burnt upon entry t…
Fossil diatoms in a new carbonaceous meteorite
N. C. Wickramasinghe, J. Wallis, D. H. Wallis +1
We report the discovery for the first time of diatom frustules in a carbonaceous meteorite that fell in the North Central Province of Sri Lanka on 29 December 2012. Contamination i…
The Polonnaruwa meteorite: oxygen isotope, crystalline and biological composition
Jamie Wallis, Nori Miyake, Richard B. Hoover +7
Results of X-Ray Diffraction (XRD) analysis, Triple Oxygen Isotope analysis and Scanning Electron Microscopic (SEM) studies are presented for stone fragments recovered from the Nor…
Extraterrestrial Life and Censorship
N. Chandra Wickramasinghe
In this article I chronicle a series of landmark events, with which I was personally involved, that relate to the development of the theory of cosmic life. The interpretation of ev…