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posted by janrinok on Wednesday November 24 2021, @03:23PM   Printer-friendly
from the Andromeda-Strain dept.

Space Biosecurity: Scientists Warn that Alien Organisms on Earth May Become a Reality Stranger than Fiction:

Scientists warn, without good biosecurity measures 'alien organisms' on Earth may become a reality stranger than fiction.

Published in international journal BioSciences, a team of scientists, including Dr. Phill Cassey, Head of the Department of Ecology and Evolutionary Biology at the University of Adelaide, are calling for greater recognition of the biosecurity risks ahead of the space industry.

"In addition to government-led space missions, the arrival of private companies such as SpaceX has meant there are now more players in space exploration than ever before," said Associate Professor Cassey.

"We need to take action now to mitigate those risks."

Space biosecurity concerns itself with both the transfer of organisms from Earth to space (forward contamination) and vice-versa (backward contamination). While the research points out that at present the risk of alien organisms surviving the journey is low, it's not impossible.

Dr. Cassey said: "Risks that have low probability of occurrence, but have the potential for extreme consequences, are at the heart of biosecurity management. Because when things go wrong, they go really wrong."

Journal Reference:
Anthony Ricciardi, Phillip Cassey, Stefan Leuko, et al. Planetary Biosecurity: Applying Invasion Science to Prevent Biological Contamination from Space Travel, BioScience (DOI: 10.1093/biosci/biab115)


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  • (Score: 3, Interesting) by HiThere on Wednesday November 24 2021, @09:07PM

    by HiThere (866) Subscriber Badge on Wednesday November 24 2021, @09:07PM (#1199355) Journal

    If they can survive, they're probably already here. We've got fragments known to be from Mars and the Moon. Dust from outer space rains down all the time. But everything we've checked uses the same protein selection and pretty much the same genetic code. Anything larger than a virus and we can say it uses a close modification of the same ribosome protein pattern. So they've all got common ancestry.

    Worrying about this is paranoid foolishness. It's not literally impossible, but the probability is so low that it's not worth worrying about. Now if we find a working ecosystem somewhere else, then I'd revise my priors and say we ought to check this carefully. But I still wouldn't be very worried.

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