First object detected from another star system.
Oumuamua, a fireball in the shape of a cigar spotted in 2017 during its traversal of the solar system, could maybe, possibly, under conditions… have been sent by aliens, have suggested two Harvard researchers in a scientific article strongly criticized.
Oumuamua has been spotted by the telescope Pan-STARRS1 to Hawaii, hence its name, which means “messenger” in hawaiian.
First object from another star system
It measures approximately 400 metres in length and 40 in width, and was tracked down by several telescopes, is the first object detected from another star system.
After having been called an asteroid, a team of the european space Agency estimated in June that it was most likely a comet (with ice, which turns into gas near the Sun).
Oumuamua could be a probe that is fully operational is sent voluntarily by the Earth by an extraterrestrial civilization
A scenario “exotic”, in the words of the authors of the new article, would be that “Oumuamua could be a probe that is fully operational is sent voluntarily by the Earth by an extraterrestrial civilization”, they write in an article that will be published on 12 November in the journal Astrophysical Journal Letters.
The idea has quickly ignited Twitter and the scientific community. The reason for this assumption is that Oumuamua moves at a speed faster than expected. The acceleration of excessive could be explained by the pressure of solar radiation, or “solar sail”.
But according to the two researchers, from Harvard, it is not possible for heavenly bodies “which have a large surface and are very thin, which does not exist in nature”. Hence the recourse to another explanation: it is a probe powered.
We will never know
But scientists have rejected this theory shortly after the discovery. No artificial signal was found coming from the body. “Like many researchers, I would very much like that there is irrefutable proof of extraterrestrial life, but this is not the case,” said Tuesday, November 6, Alan Fitzsimmons, an astronomer at the Queens University, Belfast. “It has already been shown that the observed characteristics of the object are consistent with those of a body similar to a comet and ejected from another star system,” he says. He adds: “some arguments of their study are based on figures that contain a lot of uncertainty.”
Katie Mack, astrophysicist at North Carolina State University, does not agree. “It is important to understand that for scientists, the idea the more crazy is always publishable, as long as there is a minute chance that it is not false,” she wrote on Twitter.
“Even the authors do not believe in it probably not themselves”. “I would not say that I “believe” that it has been sent by aliens,” replies Shmuel Bialy, postdoc in astrophysics at Harvard. “Because I’m a scientist, not a believer. I am relying on evidence in order to find explanations for possible physical phenomena observed”.
The other author, Avi Loeb, head of the department of astronomy at Harvard, explained to NBC that mankind may never know, because Oumuamua away from the Earth and not come back. “It is impossible to guess the purpose of Oumuamua without more data”.
On the same subject
The cigar interstellar does not look to be the work of aliens
An asteroid detected in October is a visitor from another solar system