Monday , March 1 2021

It is challenging a scientifically subordinated vote on whether "Oumuamua was an alien aircraft



Scientists are still confusing last year's interstellar visitor, Oumuamua, and the latest theory is to delight UFO's believers. According to a new article published by Harvard University astronomers, the mammoth rock in the shape of a cigar that was transformed into our solar system in our Solar System in October 2017 had some weird attributes suggesting that it is an extraterrestrial aircraft. And while the unique physical properties of Oumuamua inspired some scientists to speculate on aliens, other scientists are not convinced and even worried about the effect of such an assumption.

"Oumuamua can be a fully operational probe intentionally sent to the Earth near the extraterrestrial civilization," wrote author Abraham Loeb, professor and head of astronomy, and Shmuel Bialy, postdoctoral scholar at Harvard-Smithsonian Center for Astrophysics.

"Oumuamua, a Hawaiian" distant object ", was first observed by a postdoctoral researcher at the University of Hawaii who spotted a stream of astronomical research from Pan-STARRS in the sky. The researcher noted that the subject was elongated, like a rod, with a longer axis It is 10 times longer than its short axis, and researchers suggest its shape will reduce abrasion from interstellar gas and dust, which is the ideal form for the interstellar airplane, and published in May in the Monthly Reports of the Royal Astronomical Society magazine, "Oumuamua has gone our solar system as a result of the gravity binary of the binary star system.

Researchers have come to the world's most recent conclusion, focusing on one of the most interesting stone properties: its unexpected acceleration after swinging over the sun, suggesting it is affected by sunlight. Since there were no signs of commonality – such as commotion or gas absorption lines – the possibility that this could be a comet was excluded in the work of Harvard researchers.

"Oumuamua deviates from the path that is exclusively dictated by gravity of the Sun," Loeb told Salon in a statement. "This may be the result of a comedic ejection, but there is no evidence for a communist rep about it. Moreover, the comets change the period of their spin and such a change is not detected for 'Oumuamua'.

After making the hypothesis through a mathematical model, the authors speculate that the non-gravitational acceleration of Oumuamua caused the pressure of solar radiation.

"The only other explanation that comes to mind is the extra force on the Oumuamua Sunlight," Loeb Salon said. "To be effective," Oumuamua must be less than a millimeter thick, like a sail. to suggest that it could be a light sail produced by foreign civilizations. "

The world's light-powered propulsion systems have been created on Earth and originated in the seventies of the last century, when NASA played the idea of ​​flying a solar sail to Halley's comet. The project has been canceled, but the nonprofit Planetary Society has since established its own program to build a spacecraft with light sails.

Yet, this speculation is causing a smaller order among scientists. Some researchers say Salon's theory that Oumuamua is a stranger light-yaw wrong and falls outside the field of science because it is indisputable.

"In science we need to be very careful about our hypothesis," said Paul Sutter, astrophysicist at Ohio State University, for Salon. "My main criticism is that as soon as you introduce aliens as a hypothesis, stop doing science, because aliens can do whatever they want."

Sutter said there was no way of testing such a hypothesis.

"We are free to have any idea we want, and crazy ideas are welcome, but they need to be tested," Sutter said. "From [aliens are] is always available, you can never exclude him, so you can not work with science. "

The uncertainty and strange behavior of Oumuamua led the researchers to speculate on extraterrestrial origin, Sutter said, adding that scientists need to be more patient or accept that they will never know what the odd stones are doing this time around.

"Our only hope is that" Oumuamua is not the only one out there, and there are other accidental stones that go through our Sun's system, and we hope we can observe Oumuam's cousin or big tetou [next]," He said.

Seth Shostak, the senior astronomer in Intelligence Intelligence (SETI), told Salon that the theory could be "an exotic solution of what can be a very secular situation".

"It could be someone a solar sailor who just wandered in our solar system or the one who intentionally intended ours, [but] you can not say that this is not true because there is no way to prove that this is true, "said Shostak Salon.

Shostak added that the extraterrestrial spacecraft that was deliberately sent was worth noting that he did not approach the Earth.

"You thought they would be an interesting goal," he said. "It just comes, turns around the sun and goes back, it's like someone interested in entering the neighborhood, walking beside the house, and knocking on the door to nothing, so I do not get it."

Dr. Michael Wall, a senior author at Space.com, and author of the upcoming book "Out There," he said, while he believes Oumuamua is unlikely to be an extraterrestrial spacecraft, the possibility should not be completely excluded.

"I do not think this is likely, but the aliens almost have to be the last explanation," he said. "You must first exhaust all natural explanations, but I do not think they should be rejected."

Since nothing in our solar system has been observed like "Oumuamua", natural explanations may not yet be known to humans.

"It is very likely that we do not have enough information and we will probably never," Wall said. "It's interesting, but it just shows that there's a good line we have to walk between too many rejects and too convincing."

At the end of the day, this paper was a fairly talk of many scientists. Loeb told Salon he did not expect the paper to attract so much attention.

"I'm glad to see the excitement of the paper, but it was not written for that purpose," Loeb said. "We have just followed the standard practice of scientific research."

Nicole Karlis

Nicole Karlis is a reporter in Salon. It covers health, science, technology and gender politics. Tweet her @nicolekarlis.
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