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Aliens Among Us: Sensitivity of the Invasive Alien Fish Black Bullhead as a Bioindicator of Pollution and Its Safety for Human Consumption.
Toxics
November 2024
Department of Biology and Inland Waters Protection, Institute for Multidisciplinary Research, University of Belgrade, 11030 Belgrade, Serbia.
This study aims to evaluate the black bullhead , an invasive alien fish (IAF) in Serbia, as a bioindicator organism and assess the safety of natural and aquaculture specimens for human consumption. A set of biomarkers was analysed to assess the bioindicator potential at a site exposed to agricultural activities. The genotoxic response was determined by an alkaline comet assay and micronucleus assay in fish erythrocytes, and the metal pollution index (MPI) was calculated to assess the toxic element burden on fish.
View Article and Find Full Text PDFSome Pertinent Issues for Interstellar Panspermia Raised after the Discovery of 1I/'Oumuamua.
Astrobiology
December 2022
School of Earth and Space Exploration, Arizona State University, Tempe, Arizona, USA.
The interstellar objects 1I/'Oumuamua and 2I/Borisov confirm the long-held expectation that bodies from one stellar system will be carried to another, allowing, interstellar panspermia. Life might be transferred between stellar systems, depending on the nature of the bodies and how they escaped their systems. 2I/Borisov appears to be a comet, with no more likelihood of carrying life than Solar System comets.
View Article and Find Full Text PDF'Oumuamua Is Not a Probe Sent to Our Solar System by an Alien Civilization.
Astrobiology
December 2022
Department of Physics & Astronomy, UCLA, Los Angeles, California, USA.
'Oumuamua, the first known object of extrasolar origin seen to enter our Solar System, has multiple unusual characteristics that, taken together, are very difficult to explain with conventional astronomical entities like asteroids and comets. Consequently, it has been hypothesized that 'Oumuamua is an interstellar probe that was constructed by an alien civilization. We demonstrate that the accomplishments that can be achieved with large space telescopes/interferometers in the alien's planetary system will completely quench any motivation for construction and launch of an 'Oumuamua-like probe.
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