ALIEN’S MEGASTRUCTURE FOUND IN SPACE!!!

On May 19, an urgent call went out to scientists around the world to turn as many telescopes as possible toward the star, to try and crack the mystery of its behavior.

“At about 4 a.m. this morning I got a phone call … that Fairborn [Observatory] in Arizona had confirmed that the star was 3 percent dimmer than it normally is,” Jason Wright, an associate professor of astronomy at Pennsylvania State University, who is managing a study of Boyajian’s star, said during a live webcast today at 2 p.m. EDT (1800 GMT). “That is enough that we are absolutely confident that this is no statistical fluke. We’ve now got it confirmed at multiple observatories, I think.”

Star KIC 8462852, or Boyajian’s star (also nicknamed “Tabby’s star,” for astronomer Tabetha Boyajian, who led the team that first detected the star’s fluctuations), has demonstrated an irregular cycle of growing dimmer and then returning to its previous brightness. These changes were first spotted in September 2015 using NASA’s Kepler Space Telescope, which was built to observe these kinds of dips in a star’s brightness, because they can be caused by a planet moving in front of the star as seen from Earth.

But the brightness changes exhibited by Boyajian don’t show the kind of regularity that is typical of a planet’s orbit around its star, and scientists can’t see how the changes could be explained by a system of planets.

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. But no leading hypothesis has emerged, so scientists have been eager to capture a highly detailed picture of the light coming from the star during one of these dimming periods. This detailed view is what scientists typically call an object spectra. It can reveal, for example, the specific chemical elements that are in a gas. It can also tell scientists if an object is moving toward or away from the observer.

Whatever’s causing the star to get dimmer will leave a spectral fingerprint behind,” Wright said during the webcast, which took place in the Breakthrough Listen laboratory  at the University of California, Berkeley. “So if there is a lot of dust between us and the star … it will block more blue light than red light. If there is gas in that dust, that gas should absorb very specific wavelengths and we should be able to see that. And so, we’ve been eager to see one of these changes in one of these dips of the star so we can take some spectra.”

But the scientists couldn’t predict when the next dimming event would occur or how long it will last. (Dips detected by Kepler lasted for between two and seven days, according to Wright.) Professional-grade telescopes typically schedule observing time weeks or months in advance, so Wright and his colleagues knew their observations would have to come at the behest of colleagues who were already using the telescopes for other projects.

“We need to have a network of people around the world that are ready to jump on [and observe it],” Wright said. “Fortunately, Tabby’s star is not too faint and so there are a lot of observers and telescopes … that have graciously agreed to take some time out of their science to grab a spectrum for us.

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Asad Khawar, 15 years old.

administrator of Gegapedia and Gegamall.

Karachi, Pakistan.

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