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Pastimes : IT CAME FROM OUTER SPACE
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To: kinkblot who wrote (332)5/23/2003 10:30:18 PM
From: kinkblot  Read Replies (1) of 480
 
Is bug from outer space?

thesun.co.uk

Chandra Wickramasinghe, Cardiff University
Milton Wainwright, Sheffield University

astrobiology.cf.ac.uk - Cardiff Centre for Astrobiology

In the July 2001 SPIE Conference paper (left sidebar), NCW et al. estimate the daily mass input of biomaterial to Earth from space at about a third of a ton - assuming that the microbial cells detected are indeed from space. They found viable cells in air samples taken from 24-41 kilometers, "well above the local tropopause (16 km), above which no air from lower down would normally be transported."

In the Sun article the estimate is put at "a ton," so either the calculation has been refined or The Sun rounded up to the nearest whole number. Over an extended period, the amount is less important than the composition. Biochemical precursors? Fully-fledged microbes? Giant flying reptiles?
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