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Interstellar Interloper (A/2017 U1)


Nikolai

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10 hours ago, Green Baron said:

it may be best to stick with the original and widely accepted explanation of a comet like object with a very old surface.

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The five stages are chronologically:  denial anger, bargaining, depression and acceptance.

 

10 hours ago, tater said:

LOL. It's literally never aliens.

An absence of evidence is not an evidence of absence.

8 hours ago, cubinator said:

I think we will surely see more of these interstellar interlopers in the future

A whole fleet is coming soon? Do you know something?

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4 minutes ago, kerbiloid said:

A whole fleet is coming soon? Do you know something?

On 8/7/2018 at 3:53 PM, cubinator said:

Preposterous! We would never waste our time visiting Earth!

    / \
_/___\_
 |o.o  |

    / \
_/___\_
 |  o.o|

10 minutes ago, kerbiloid said:

An absence of evidence is not an evidence of absence.

You *AHEM* WE still have no evidence worth freaking out over. It's an interesting conjecture, and of course not out of the question, but all we really know for sure is it's a big object with a peculiar shape. That's not much to go off of, aliens or not.

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It is a play of mind of these guys and will never be confirmed or falsified. It just adds to the noise around Oumuamua, its possible origins and history.

The length index had already been corrected to 5/1 or even 3/1. The surface features, as far as they could have been interpreted, were concurrent with a very old asteroid. The observed acceleration that of a natural comet. Possible systems of origin are unclear, it has been underway for too long and too many potential encounters could have changed its path. That is what we know, the rest is modeling and more or less plausible suggestions or even speculations.

The contradiction to classic solar system objects is its apparent density and surface features. But the explanation with a comet or comet fragment that formed a harder shell by sublimation of volatiles and exposure to radiation and particle bombardment for billions of years is much more plausible than a cut loose solar sail. And we already know that not every system is like our system. In fact, very few seem to be. So more possible ways of life for Ummagumma like objects can be expected in the future.

And, frankly, in contradiction to what the paper suggests, i doubt that a such a thin surface as they suggest would really be intact after a long time in interstellar space.

Edited by Green Baron
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  • 2 weeks later...

Apparently, the wild speculations at the far fringes of science and beyond have not yet been published.-_-

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In the meantime, something from the science front on the matter:

https://export.arxiv.org/abs/1810.02148

The authors suggest that 'Oumuamua is unlikely one of the objects that fits our classification. But there could be quite a range of possible situations where icy planetesimals could be ejected from protoplanetary disks and Oma may be one of them. Also, as these objects may be rare in our vicinity, it may be difficult to find a sample in the meteorite data at hand.

 

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  • 3 years later...
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