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Astronomy Picture of the Day -- Unexplained Dimmings in KIC 8462852
NASA ^ | Monday, June 13, 2016

Posted on 06/13/2016 9:46:29 PM PDT by SunkenCiv

Explanation: Why does star KIC 8462852 keep wavering? Nobody knows. A star somewhat similar to our Sun, KIC 8462852 was one of many distant stars being monitored by NASA's robotic Kepler satellite to see if it had planets. Citizen scientists voluntarily co-inspecting the data along with computers found this unusual case where a star's brightness dropped at unexpected times by as much as 20 percent for as long as months -- but then recovered. Common reasons for dimming -- such as eclipses by orbiting planets or stellar companions -- don't match the non-repetitive nature of the dimmings. A currently debated theory is dimming by a cloud of comets or the remnants of a shattered planet, but these would not explain data indicating that the star itself has become slightly dimmer over the past 125 years. Nevertheless, featured here is an artist's illustration of a planet breaking up, drawn to depict NGC 2547-ID8, a different system that shows infrared evidence of such a collision. Recent observations of KIC 8462852 did not detect the infrared glow of a closely orbiting dust disk, but gave a hint that the system might have such a disk farther out. Future observations are encouraged and creative origin speculations are sure to continue.

Monday, June 13, 2016

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy Picture of the Day; Science
KEYWORDS:
[Illustration Credit: NASA, JPL-Caltech]

1 posted on 06/13/2016 9:46:29 PM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; disndat; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
The Big One

2 posted on 06/13/2016 9:48:21 PM PDT by SunkenCiv (I'll tell you what's wrong with society -- no one drinks from the skulls of their enemies anymore.)
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To: SunkenCiv

Well that’s a depressing painting.


3 posted on 06/13/2016 10:26:59 PM PDT by Talisker (One who commands, must obey.)
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To: SunkenCiv

Common reasons for dimming — such as eclipses by orbiting planets or stellar companions — don’t match the non-repetitive nature of the dimmings. A currently debated...

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How do they know it’s “non repetitive” unless they observe it for a couple million years?


4 posted on 06/13/2016 10:30:45 PM PDT by Graybeard58 (Crooked Hillary's going down and I aint talkin about, on Huma.)
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To: Graybeard58

They mean they aren’t on a regular cycle, as if a large planet were in orbit around the star.


5 posted on 06/14/2016 12:03:52 AM PDT by SunkenCiv (I'll tell you what's wrong with society -- no one drinks from the skulls of their enemies anymore.)
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To: Talisker

If you turn it 90 clockwise, it turns into a standing man, a magician making a disappearance using some kind of smoke trick.


6 posted on 06/14/2016 12:05:41 AM PDT by SunkenCiv (I'll tell you what's wrong with society -- no one drinks from the skulls of their enemies anymore.)
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To: SunkenCiv

First thing I would do about the Dimming problem is check the Ground Wire.


7 posted on 06/14/2016 12:08:43 AM PDT by Kickass Conservative (If Scandals were Brains, Hillary would be the smartest person on the Planet.)
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To: Kickass Conservative

Then swap out the analog board.


8 posted on 06/14/2016 1:07:49 AM PDT by SunkenCiv (I'll tell you what's wrong with society -- no one drinks from the skulls of their enemies anymore.)
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To: Graybeard58

Maybe it’s a large spacecraft on it’s way to earth that is blocking the light. Does the National Enquirer know about this?


9 posted on 06/14/2016 4:56:12 AM PDT by Tom Bombadil
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To: SunkenCiv

Look up Epsilon Aurigae for a similar star.

https://en.wikipedia.org/wiki/Epsilon_Aurigae

It’s quite plausible.


10 posted on 06/14/2016 8:47:27 AM PDT by Conan the Librarian (The Best in Life is to crush my enemies, see them driven before me, and the Dewey Decimal System)
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