It was around a year ago when NASA first reported on the presence of Oumuamua, a cigar-shaped asteroid that looks like one of the alien spaceships from Independence Day. This was the first interstellar object to enter our solar system from another part of the galaxy.
‘Oumuamua’ means “a messenger from afar arriving first” in Hawaiian and it’s been hurtling through our galaxy at a speed of 200,000 MPH. Around 9 months ago, when Dr. Stephen Hawking was still alive, it was reported that he and a group of scientists were looking into the possibility that Oumuamua could be an alien spaceship.
Flash forward to this week and news has spread that two researchers at Harvard’s astronomy department have co-authored a paper claiming Oumuamua could be an alien spacecraft being pushed through space, propelled by light hitting the surface of the spaceship. This theory stems from Oumuamua speeding up as it passed the sun.
Scientists say mysterious 'Oumuamua' object could be an alien spacecraft https://t.co/8JcO4uIgwf via @NBCNewsMACH
— Harvard ITC (@HarvardITC) November 5, 2018
In the research paper, they refer to Oumuamua as a potential “lightsail of artificial origin.” Shmuel Bialy and Avi Loeb, chairman of Harvard’s astronomy department, recognize that the idea of this being an alien spaceship is fairly radical and one that other scientists will be quick to reject but they are putting forth every possible explanation for why this bizarre structure is hurtling so fast through our solar system.
NBC News reports:
“It is impossible to guess the purpose behind Oumuamua without more data,” Avi Loeb, chairman of Harvard’s astronomy department and a co-author of the paper, told NBC News MACH in an email. If Oumuamua is a lightsail, he added, one possibility is that it was floating in interstellar space when our solar system ran into it, “like a ship bumping into a buoy on the surface of the ocean.”
Loeb and his collaborator, Shmuel Bialy, a postdoctoral fellow at the Harvard-Smithsonian Center for Astrophysics, acknowledge that the alien spacecraft scenario is an “exotic” one. And perhaps not surprisingly, other space scientists have strong doubts about it.
“It’s certainly ingenious to show that an object the size of Oumuamua might be sent by aliens to another star system with nothing but a solar sail for power,” Seth Shostak, a senior astronomer at the SETI Institute in Mountain View, California, said in an email. “But one should not blindly accept this clever hypothesis when there is also a mundane (and a priori more likely) explanation for Oumuamua — namely that it’s a comet or asteroid from afar.” (via)
Scientists have been puzzling over Oumuamua ever since the mysterious space object was observed tumbling past the sun in late 2017, and now a pair of Harvard researchers are raising the possibility that it's an alien spacecraft. https://t.co/chEmXDG1zf pic.twitter.com/DMM28OWojD
— NBC Bay Area (@nbcbayarea) November 6, 2018
If it IS an alien spaceship, what’s next?
If it was a probe on a reconnaissance mission, as Avi Loeb contemplates, the obvious question is, once the civilization that sent it receives back information about our system, what will they do with it?
Very cool article. Thank you for sharing it.
— @Happyboredom@mstdn.party (@_MasonW) October 31, 2018
This following last year’s work by Avi Loeb on fast radio bursts that could power such a light sail. @HarvardITC https://t.co/cV3zdS5Njw
— Jason Radisson (@JasonRadisson) November 4, 2018
I'm a fan of this theory: https://t.co/MkiqwWI8eo
"…that it's a spent stage of a multi-stage spacecraft. If the primary stage were decelerating for a rendezvous with Earth, then any stage that made it to full acceleration would reach us first…"— I'm Just Dan (@DanLaChapelle) November 6, 2018
I think Maddie’s onto something here:
The fundamental issue I see here is literally any space thing we do not understand (which is to say p much all space things) could be aliens… and I’m not sure how astronomers discuss that amongst themselves without inciting a riot
— Maddie Stone (@themadstone) November 6, 2018
This person’s thread on Twitter has some good arguments against this being an alien spacecraft but you’ll have to read the full Harvard paper to determine the legitimacy of these claims for yourself.
To begin with, this is just the hypothesis of two Harvard researchers. You can read their paper here: https://t.co/F4gpsgIkCC. Back when 'Oumuamua was discovered in October 2017, the scientific community seemed open to discussing the possibility that it could be a spacecraft.
— Keith Cooper (@21stCenturySETI) November 6, 2018
This was partly brought about by its unusual, elongated shape, but as observations built up, it quickly became apparent that 'Oumuamua was a comet or an asteroid of some kind, although which it is – comet or asteroid – is still being debated.
— Keith Cooper (@21stCenturySETI) November 6, 2018
'Oumuamua had, in fact, been predicted. Estimates suggest that there could be 10,000 such interstellar objects passing though our Solar System at any one time. They're just difficult to find, but hopefully new survey telescopes coming online should find them in greater numbers
— Keith Cooper (@21stCenturySETI) November 6, 2018
With so many rogue interstellar asteroids and comets, it seems very unlikely that the first one we find is not an asteroid or comet, but a probe. That's not to say such probes do not exist, but the odds are against 'Oumuamua being one, unless there are lots of probes visiting us.
— Keith Cooper (@21stCenturySETI) November 6, 2018
Although I disagree with their conclusion I don't see a problem with the researchers, Shmuel Bialy and Avi Loeb, presenting their hypothesis. However, it shows how, if we discover a strong candidate SETI signal, scientists will have to be careful how they present it to the media.
— Keith Cooper (@21stCenturySETI) November 6, 2018
To conclude: Bialy and Loeb think 'Oumuamua could be a probe. Most scientists think it's an asteroid or comet. Observational evidence & Occam's razor suggest it's likely the latter. It is possible that one day we could find a probe, but it would require incontrovertible evidence.
— Keith Cooper (@21stCenturySETI) November 6, 2018
Evidence. We need some damn evidence.
It’s time to scramble Bruce Willis and his crew so we can shoot them into space and have them land on the alien spaceship and figure out for sure whatever this thing is. That’s our only course of action.
You can read the full published paper from Harvard here.