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SETI Astronomers Find No Evidence for Artificial Transmitters on Oumuamua
Sci-News.com ^ | Dec 7, 2018 | News Staff / Source

Posted on 12/09/2018 9:53:48 AM PST by ETL

Following its discovery in October 2017, ‘Oumuamua was the subject of popular speculation about a possible non-natural origin.

Its highly elongated shape and the fact that no coma was observed strengthened this hypothesis for some, as these are uncharacteristic of asteroids and comets.

A recent paper by Harvard Smithsonian Center for Astrophysics researchers Dr. Shmuel Bialy and Professor Abraham Loeb has also suggested the possibility that ‘Oumuamua is a deliberate construction.

The scientists argued that the slight, unexpected acceleration observed for this object could be caused by pressure from sunlight as ‘Oumumua swung around the Sun. Their hypothesis is that the object might be a light sail, either deliberately or accidentally sent our way. ..."

“We were looking for a signal that would prove that this object incorporates some technology – that it was of artificial origin,” said SETI Institute researcher Dr. Gerry Harp, lead author of a paper published online in the journal Acta Astronautica.

“We didn’t find any such emissions, despite a quite sensitive search. While our observations don’t conclusively rule out a non-natural origin for ‘Oumuamua, they constitute important data in assessing its likely makeup.”

Dr. Harp and co-authors observed ‘Oumuamua when it was about 170 million miles away, or slightly less than the diameter of Earth’s orbit.

The observations were made between November 23 and December 5, 2017, using the wide-band correlator of the ATA at frequencies between 1 and 10 GHz and with a frequency resolution of 100 kHz.

No signals were found at a level that would be produced by an omnidirectional transmitter on-board the object of a power of about 10 watts or more.

(Excerpt) Read more at sci-news.com ...


TOPICS: Astronomy; Chit/Chat; Science
KEYWORDS: abrahamloeb; actaastronautica; asteroid; astronomy; aviloeb; gerryharp; harvard; oumuamua; science; seti; shmuelbialy; xplanets; yurimilner
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To: ETL

21 posted on 12/09/2018 11:15:08 AM PST by dfwgator (Endut! Hoch Hech!)
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To: dfwgator
Image result for "lost in space" giants gif

Image result for Oumuamua

22 posted on 12/09/2018 11:18:07 AM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: ETL; litehaus
3.14 is of course pi

3.14etc is certainly ONE way of expressing the irrational number we call "pi".

Is it the only way of expressing that number?

Please think about my question some more ... first contact with an alien species (if such even exist) will require that we not make unwarranted assumptions about them.

23 posted on 12/09/2018 11:26:09 AM PST by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
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To: NorthMountain

‘ONE way’

Granted...Base this, that or the other....Nevertheless, I assume the first ‘contact’ will be a ‘signal’ and pi, i whatever base, will be universal..and a sign of understanding...


24 posted on 12/09/2018 11:49:26 AM PST by litehaus (A memory toooo long.............)
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To: litehaus
i whatever base,

YES!

That's my point ... if we're looking for "pi", or "e", or whatever other "universal number", we need to make sure we'll recognize it when we see it. If "ET" is an octopus, he(?) probably won't use decimal numbers.

eiπ + 1 = 0 would be a great way of saying "I'm intelligent and sufficiently advanced to know math".

25 posted on 12/09/2018 12:02:48 PM PST by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
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To: BenLurkin

This Irish hag would be a babe ...In Boston.

Where they call pretty woman a tourist.


26 posted on 12/09/2018 12:12:19 PM PST by trotskylvalia (where nose meets the grindstone)
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To: BenLurkin

She looks scared or embarrassed.

Very pretty, though.


27 posted on 12/09/2018 12:18:56 PM PST by Windflier (Pitchforks and torches ripen on the vine. Left too long, they become black rifles.)
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To: NorthMountain
we not make unwarranted assumptions about them.

Might be the equivalent of millennials:

"Like, math is HARD, dude!"

28 posted on 12/09/2018 12:23:35 PM PST by doorgunner69
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To: trotskylvalia

Yankees fan aren’t ya.


29 posted on 12/09/2018 12:25:05 PM PST by BenLurkin (The above is not a statement of fact. It is either satire or opinion. Or both.)
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To: bgill

My understanding is that SETI listens, it doesn’t transmit. Any pinging would be an issue if SETI actually heard something.


30 posted on 12/09/2018 1:26:30 PM PST by Campion ((marine dad))
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To: BenLurkin

People should be paid to watch baseball, not charged for it.

Both teams should be renamed thou, to reflect their fans.

Boston Red Bolsheviks vs. Yankee Bolsheviks.


31 posted on 12/09/2018 1:39:08 PM PST by trotskylvalia (where nose meets the grindstone)
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To: ETL

When the media was screaming it may be a space ship, we’re sure it is a spaceship, all I could think was that Arthur C. Clarke’s “Rendezvous with Rama” series was FICTION.


32 posted on 12/09/2018 1:46:30 PM PST by tbw2
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To: KevinDavis; annie laurie; Knitting A Conundrum; Viking2002; Ernest_at_the_Beach; Mmogamer; ...
Thanks ETL. One of a kind opportunity, they had to take a look.
 
X-Planets
· join · view topics · view or post blog · bookmark · post new topic · subscribe ·
Google news searches: exoplanet · exosolar · extrasolar ·

33 posted on 12/09/2018 2:31:35 PM PST by SunkenCiv (and btw -- https://www.gofundme.com/for-rotator-cuff-repair-surgery)
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To: NorthMountain

That it came from a primitive civilization which didn’t know the value of pi?


34 posted on 12/09/2018 3:14:25 PM PST by Pearls Before Swine
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To: Pearls Before Swine
That it came from a primitive civilization which didn’t know the value of pi?

So backward they couldn't figure out how to set the clock on their DVD players. :)

35 posted on 12/09/2018 3:44:19 PM PST by ETL (Obama-Hillary, REAL Russia collusion! Uranium-One Deal, Missile Defense, Iran Deal, Nukes: Click ETL)
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To: NorthMountain

So you’re saying they would use a different base, but still use Hindu numerals? Why would you think that? It’s absurd.


36 posted on 12/09/2018 6:07:56 PM PST by Born to Conserve
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To: Born to Conserve
So you’re saying they would use a different base, but still use Hindu numerals?

No. I'm saying that even if we manage to figure out their numerals, we shouldn't ass-u-me that they're using the same base as us. I picked ONE (of many) ways to illustrate that even regarding universal constants, "ET" may think enough differently from us to make understanding very difficult. Why would you think otherwise? It's absurd.

37 posted on 12/09/2018 6:14:45 PM PST by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
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