'This is not a drill': Scientists scramble to observe mysterious Tabby's Star

NASA JPL  Caltech

NASA JPL Caltech

The strangest star in the Universe has suddenly kicked into gear again, with researchers reporting that its light has started dimming in freakish ways - just like it did two years ago when it baffled scientists with its irregular light emissions.

Scientists have hypothesized that the changes could be due to a swarm of comets passing in front of the star, that they're the result of strong magnetic activity, or that it's some massive structure built by aliens. The scientists observed that its brightness returned to its normal levels.

Now, the star is repeating its fading act, according to Jason Wright, an astronomer at Pennsylvania State University.

However, in the case of Tabby's Star, experts are now clueless as to what is causing the irrational dimming, with the possibility of aliens slowly becoming a likely scenario.

But Tabby's Star dips irregularly in ways that can't be attributed to the movement of planets - dimming by approximately 20 per cent at one point in time.

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The 2015 patterns were so weird, they even prompted one scientist to offer up the possibility that an "alien megastructure" such as a Dyson Sphere has been messing with its emissions. As early as Friday, he already observed that Tabby's Star had dimmed by three percent in just a couple of days. It's special because its bright lights dim and flicker in a random, unidentifiable pattern, which is really unusual, as far as star behavior goes.

"So if there is a lot of dust between us and the star...it will block more blue light than red light".

He took to Twitter to tell the world to point their telescopes at Boyajian's star for the next 48 hours. "I think it's very likely that we haven't heard the right answer yet - that I haven't heard the right answer yet, anyway". The dimming is hard to speculate on how long it will occur. The largest and most powerful telescopes that will heed the call are the twin 10-meter telescopes at the W.H. Keck Observatory in Hawaii. As the research and observations continue, scientists around the globe are hoping that spectral readings will give them a clue as to what, if anything, passed in front of the star.

Breakthrough and the Berkeley center are now trying to get some observing time on the Green Bank radio telescope in West Virginia, according to Siemion. This sent astronomers like Tabetha Boyajian, who is credited with discovering the star and its odd nature, scrambling on social media and elsewhere to get "eyes" on the system, both human and technological.

When freakish astronomical events happen, scientists are very wary of calling alien interference and instead look for every possible explanation before they explore the extra-terrestrial avenue.