Skip to comments.Scientists Now Say Interstellar Object May Have Been Alien Probe
Posted on 11/07/2018 2:49:51 PM PST by Candor7
Harvard scientists reexamined the bizarre, interstellar space object known as Oumuamua, which rocketed through our solar system late last year, resurrecting the possibility that it may be an alien probe. Academics and scientists were quick to write off the cigar-shaped object as a previously unknown type of bolide a comet or asteroid propelled in a highly unusual manner, but their observations are once again, being challenged.
Oumuamua, which means a messenger sent to reach out in advance, was first observed by Robert Weryk at the Pan-STARRS 1 telescope in Hawaii. He measured the object to be several hundred meters in length, or the size of a large sports stadium.
The size and shape of the object were calculated to be able to hold up to collisions with space dust and debris while maintaining enough momentum to travel the vast distance between stars, but recent examinations found a discrepancy in its mass-to-area ratio that doesnt quite add up.
Known solar system objects, like asteroids and comets, have mass-to-area ratios orders of magnitude larger than our estimate for Oumuamua, said Shmuel Bialy and Abraham Loeb of the Harvard Smithsonian Center for Astrophysics.
If radiation pressure is the accelerating force, then Oumuamua represents a new class of thin, interstellar material, either produced naturally, or of an artificial origin.
They went on to speculate about the possibility of Oumuamua as a type of artificial satellite known as a lightsail, which is currently in development by the Breakthrough Initiative program founded by Yuri Milner and Stephen Hawking. Loeb is a member of the Breakthrough Starshot Initiative.
The lightsail technology might be abundantly used for transportation of cargos between planets or between stars. In the former case, dynamical ejection from a planetary system could result in space debris of equipment that is not operational anymore and is floating at the characteristic speed of stars relative to each other in the Solar neighborhood. This would account for the various anomalies of Oumuamua, such as the unusual geometry inferred from its lightcurve, Bialy and Loeb said.
Oumuamua hurdled through our solar system at 58,000 mph when it was discovered on Oct. 19, 2017. The object was then propelled by the Suns gravity, causing it to blast off on a hyperbolic trajectory out of our solar system at a rate of 196,000 mph.
This exit speed was initially attributed to a combination of a gravity assist from the Sun and outgassing the release of gasses from a comet as its surface heats. But scientists noticed that Oumuamua didnt show the typical coma, or cloud of gas, one might expect from an outgassing comet, making its high escape velocity especially strange.
This led Loeb and Bialy to consider another potential for Oumuamua a more exciting one.
Alternatively, a more exotic scenario is that Oumuamua may be a fully operational probe sent intentionally to Earth vicinity by an alien civilization, the authors said.
Unfortunately its way too late for us to send a probe to Oumuamua or even to photograph it so that it could be studied properly, due to simply to its sheer speed and the distance its already travelled from Earth. Instead, Bialy and Loeb suggest we keep our eyes out for similar objects careening through our local celestial neighborhood.
Ping to Strange Comet like object ( Oumuamua) .
Anybody remember “Childhood’s End?”
Oumuamua, which means a messenger sent to reach out in advance,
or a Space Turd
Yes, I am sure that’s exactly what it was. /sarc
or Jeff Sessions exit vehicle? LOL.
“Oumuamua.” Booga, booga right back at them.
or a Space TurdEmanating from Uranus.
And on far-off Earth, Dr. Carlisle Perera had as yet told no one how he had wakened from a restless sleep with the message from his subconscious still echoing in his brain: The Ramans do everything in threes.
Two more on the way?
Maybe it was a derelict. Or a probe. Or maybe it was just a weird chunk of flotsam. We'll likely never know.
More on ʻOumuamua
Zathras knows what it is but Zathras not telling.
When I later found out that Clarke was something of an oddball and maybe a pervert, the ending finally made some perverse sense.
Silence! The humans know nothing of us yet. Nothing.
I find it very hard to believe that they didn’t take the best possible pictures of it when they could.
The Trashmen - Surfin Bird - Bird is the Word 1963
Ok it’s not anywhere near me bum so it’s not the normal alien probe!
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