Tabby’s “Alien-Megastructures” Star Had Begun to Dim Again

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Matteo Bonetti
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Since it was first discovered, Tabby’s Star has baffled scientists all across the world.  The reason for this is that it doesn’t act like any other star out there.  It continues to lose brightness is random erratic spurts and is something that we’re not used to seeing. One astrophysicist from Louisiana State University, Tabetha Boyajian, recently tweeted that the star had dimmed by as much as three percent, which is quite a lot.

Some scientists believe these dips in brightness are caused by planetary collisions with Tabby’s Star, while others have suggested that a massive alien superstructure could be obstructing its starlight. The latest tweet brought excitement to the world of astronomy as it may indicate a greater dimming trend is about to begin. Using data from NASA’s Kepler Telescope, Boyajian previously discovered over a 100-day period the star had, in fact, dimmed several times, losing as much as 20 percent of its radiance at one point.


The idea that an alien megastructure may be in the way derived from a 1960’s thought where Freeman Dyson suggested that advanced civilizations may need large amounts of energy to power their advanced technologies, and so what better place than a star.  Dyson’s suggestion was that the aliens could build a megastructure around the star in order to capture and harness its energy.  The belief is then that this megastructure would obstruct the light’s luminosity, causing it to dip suddenly.

The megastructure theory isn’t the only one in existence. In January this year, a study was released in which Columbia astrophysicist Brian Metzger proposed his theory that a planet may have collided with or pushed very close to Tabby’s Star.  He suggests that such action may cause the sun to rip parts of the planet and send a mess of planetary material and dust flying into space, obstructing our view of Tabby’s light.



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