Tabby's Star

Tabby’s Star

Tabby’s Star. By Space.com. The Soft Disclosure saga continues. Keeping us constantly informed about these abnormalities in the Solar System people are slowly becoming accustomed to this. Following their secular agenda, an announcement that will surely have global coverage of alien life in the Universe is imminent. We can only note the choosen timeline, a drop at a time that personally, to us, resonate as a kind of torture rather than a revelation.

Tabby’s Star

The perplexing cosmic object known as “Boyajian’s star” is once again exhibiting a mysterious pattern of dimming and brightening that scientists have tried to explain with hypotheses ranging from swarms of comets to alien megastructures.

Today (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.

Tabby's Star Cygnus Constellation

Cygnus Constellation

Tabby’s Star

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 the Tabby’s Star 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 Tabby’s 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 Tabby’s 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 [tonight].

Wright said the call had gone out to amateur as well as professional astronomers to observe Tabby’s Star during this dimming period. 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. The team is working to gain observing time on at least three other large telescopes on the U.S., according to Wright.

The Breakthrough Listen initiative, which searches for signs of intelligent life in the universe, has also taken an interest in the star and will be observing Tabby’s Star with the Automated Planet Finder telescope at Lick Observatory in California, according to Andrew Siemion, director or the Berkeley SETI Research Center, said in the webcast.

It’s Super Bowl Sunday,” Siemion said of the atmosphere at the during the webcast. “There’s a palpable tension.

 

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