Structures similar to algae were found on fragments of a meteorite which struck Sri Lanka last year, proving that life exists in other places of the universe.
In a paper written by a team of scientists, they claim that the microscope images of the rocks reveal small fossilized life forms from space.
They are convinced that their findings are evidence of panspermia, the hypothesis that life exists throughout the universe and is spread by meteoroids, asteroids and planetoids.
In January, Professor Chandra Wickramasinghe of the Buckingham Centre for Astrobiology said initial investigations of the meteorite revealed evidence of alien life forms.
Chandra is a joint author of a new study reiterating the claims based on new analysis of the rocks.
In the paper, it explains that the meteorite fell on December 29 last year in Sri Lanka. As it blazed through the atmosphere, it disintegrated on entry and rained down on villages.
Police in the area collected samples of the rocks and gave them to the Medical Research Institute of the Sri Lankan Ministry of Health.
Cardiff’s School of Mathematics received 628 fragments of the meteorite, three of which were “clearly identified as possible meteorites.”
In the most recent study, scientists claim the three rocks contain fossilized biological structures fused into the rock matrix.
They said they also conducted tests ruling out the possibility of terrestrial contamination.
Microscopic images of the structures show complex, thick-walled, carbon-rich microfossil around 100 micrometers across.
Another image shows well-preserved flagella 100 micrometers long and two micrometers in diameter.
Scientists said the long and thin nature of the structures indicate “a low gravity, low pressure environment and rapid freeze-drying,” which likely happened in space.
They said their findings “offer clear and convincing evidence that these obviously ancient remains of extinct marine algae found embedded in the Polonnaruwa meteorite are indigenous to the stones and not the result of post-arrival microbial contaminants.”
Professor Wickramasinghe said microbes from space are the reason life formed on our planet years ago.
“We are all aliens - we share a cosmic ancestry,” he said. “Each time a new planetary system forms a few surviving microbes find their way into comets. These then multiply and seed other planets.”