Scientists are still struggling for last year's interconnection visitor, Oumuamua, and latest theory certainly to excite UFO's believers. According to a newspaper published by Harvard University astronomers, the mammoth, the cigar-shaped rock that joined and out of the solar system in October 2017 had some strange properties that suggest it an alien spacecraft. And although the unique physical properties of Oumuamua have motivated some scientists to guess for aliens, other scientists are unexpected and even worried about a similar impact of this type.
"Oumuamua can be a fully functional researcher sent deliberately to the vicinity of Earth by an alien civilization," wrote Abraham Loeb's authors, astronomy chair and chairman, and Shmuel Bialy, a postdoctoral scholar at the Harvard-Smithsonian Center for Astrophysics.
Oumuamua, Hawaiian, led to a "remote object", first by a postdoctoral researcher at the University of Hawaii which was sifting through the stream of data from the aerial Pan-STARRS astronomical survey. The researcher observed that the object was too long, such as a stick, with a long axis 10 times longer than a short axis. Researchers suggested that its shape would reduce the abstractions of gas and interstellar dust, and thus an ideal shape for an interstellar spacecraft. Then in May, a paper published in the Monthly Notices of the Royal Astronomical Society of Oumuamua suggested a campaign towards our solar system due to the gravity of a binary star system.
Researchers terminated the other global collection by focusing on one of the most interesting properties of the rock: its unexpected rapid conversion after turning to the sun, which suggests that it is triggered without the sun. As there were observation signs of cometary activity – such as cometary tail, or absorption lines to gas emissions – the potential for comedy could have been abolished in the paper by Harvard researchers.
"Oumuamua is diverting from a sketch that has only been forced by the severity of the Sun," said Loeb at Salon in a statement. "This could have resulted in compulsory compulsion, but there is no evidence for a cometary tail of its scope. Comets also change the spinning period and no such change has been found for & # 39; Oumuamua. & # 39;
After calculating the hypothesis through a mathematical model, the authors guess that the disadvantage of Oumuamua is disadvantageous due to the pressure of solar radiation.
"The only other explanation that comes to think is the extra power placed on Oumuamua according to sunlight," said Loeb at Salon. "In order to be effective, & # 39; Oumuamua needs to be less than a millimeter in thickness, like fun. This led us to suggest that it could be a light fun produced by an alien civilization. "
Fun stimulating systems have been created on Earth, and their origin dates back to the 1970s, when NASA began the idea of sunscreen to the Halley comet. The project was canceled, but since then the not-for-profit Planning Society has successfully set up its own program to build a light-moving spacecraft.
Yet, this guess is exactly what causes a small row among scientists. Some researchers tell Salon the theory that Oumuamua is a strange light fun is flawed, and fall outside the areas of science, as it is unreliable.
"In science, we have to be extremely careful about our assumptions," said Paul Sutter, arthropysist at the Ohio State University, to Salon. "My main criticism is that, as soon as you introduce aliens as a presumption, you give the best to make science, because aliens can do anything they want."
Sutter said that such a assumption can not be proven.
"We're free to have any idea we want, and crazy ideas are welcome, but they need to be searchable," says Sutter. "Since [aliens are] always available that you can not control it, which is why you can not make science with it. "
Uncommon and strange behavior Oumuamua led researchers to guess for extraterrestrial origin, says Sutter, adding that scientists should be more patient or accept that they will never know what rock overseas is here right now.
"Our only hope is that Oumuamua is just one out, and that other random rocks fall through our solar system, and we hope we can find Oumuamua's cousin's observation or big river [next], "he said.
Seth Shostak, a senior astronomer in the Search for Outstanding Intelligence (SETI), said to Salon, that the theory could be an "exotic solution to what could be a very serious situation."
"It could be a fun fun of someone who had only entered a solar system or one that was intentionally targeting, [but] you can not say that is not really because it can not be proved to be true, "said Shostak at Salon.
Shostak added that if an alien spacecraft was deliberately sent, it is worth noting that it was not very close to the Earth.
"You'd think that would be an interesting target for them," he said. "You come in, turn around the sun, and go back; it's like something interesting to move to the neighborhood, walk from your house, and do not hit on the door or anything, so I do not get it. "
Dr. Michael Wall, a senior writer at Space.com and the author of the forthcoming "Out There" book, although he believes it is unlikely that Oumuamua is an alien spacecraft, the possibility should not be completely rejected.
"I do not think it's probably, but aliens have almost the last explanation," he said. "You must first excuse all the natural explanations, but I do not think it should be removed."
As nothing like Oumuamua has been observed in our solar system, people may still not know the natural explanations.
"It's very likely we do not have enough information and it's probably not going to be that," said Wall. "It's interesting, but it shows that there is a fine line that we need to walk between being too redundant and being too credible."
At the end of the day, this paper was quite the conversation among many scientists. Loeb told Salon that he did not expect the paper to attract so much attention.
"I'm pleased to see the excitement about the paper, but it was not written for that purpose," said Loeb. "We follow the standard practice of scientific research."
Nicole Karlis is a news writer in Salon. It covers health, science, technology and gender politics. Tweet hi @ nicolekarlis.
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