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Extraterrestrial organisms can infect the earth

The growing need for space exploration increases the likelihood of small extraterrestrials invading Earth, according to new articles. Researchers refer to human records of species transfer to new environments on Earth. This change could make these organisms more aggressive and harm native species. According to a study published in the November 17 issue of the journal BioScience, such behavior may occur as extraterrestrial life invades Earth from other planets and vice versa. Anthony Ricardi“Invasive bio-professor at McGill University in Montreal,” says

The search for extraterrestrial life is an exciting endeavor that will come to fruition in the not-too-distant future. However, in the face of increasing space missions, including ground-back missions, we need to reduce the risks of biological pollution from both sides.

In their paper, Ricardi and colleagues invited other researchers, including astronomers studying extraterrestrial life and invasive biologists studying invasive species on Earth, to collaborate. Ricardi adds:

If astronomers could find life, we could guess what kind of life we ​​would encounter. The most likely forms of life will be microbial organisms and bacteria.

Scientists also consider the risk of interplanetary pollution to be very low; Because of the harsh conditions of outer space, it is very unlikely that living things will survive and survive in human spacecraft. However, we still need to be careful about interplanetary pollution and consider the harmful effects of invasive species on Earth.

Humans have damaged ecosystems around the world by introducing small organisms into new environments. For example, a species of fungus called Austropuccinia psidii entered Australia from South America due to unknown conditions, and by infecting the native eucalyptus trees in this country, it stops their growth and sometimes kills them.

In addition, researchers show that isolated ecosystems such as islands and countries such as Australia, which evolve in geographical isolation, are vulnerable to invasive species; Because the native wildlife of these areas has not evolved to adapt to such invaders. Ricardi states:

Biological invasions have often destroyed plants and animals in these systems. Planets and moons containing life should also be considered as isolated systems.

To look for evidence of interplanetary contamination, researchers point to the Berschit spacecraft that collided with the moon in 2019 while carrying thousands of Tardigrids. Tardigrades are small organisms that survive harsh environmental conditions, including vacuum. According to a study published in the journal Astrobiology in 2021, these creatures may not have survived the lunar eclipse. Space agencies, such as NASA, have been aware of the potential risks of biological pollution and planetary protection policies since the 1960s. Ricardi adds:

Despite this awareness, the new age of space exploration is targeting areas that are likely to contain life, and this carries unprecedented risks.

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These include emerging private companies such as SpaceX, which make access to space easier than ever, with the goal of traveling to Mars and beyond through the Starship program. Researchers are also proposing to increase biosecurity protocols related to space travel, focusing on the initial detection of potential biopods and the development of plans for immediate response.

به‌گفت‌ی Jennifer WadsworthPlanetarians and moons have always exchanged matter through meteorites; But human space exploration can speed up pollution.

The new article is a comprehensive overview of the current need for new laws to protect the planets; But the problem is that current protection strategies are not mandatory. “Wadsworth concludes:

The line between exploration and protection is a narrow one. One should not be left at the expense of another; But both require careful consideration and, most importantly, must be followed.


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