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#megastructure

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Chuck Darwin

Scientists hope studies into Boyajian’s star could lead to enhanced techniques for identifying distant planetary civilisations

It is our galaxy’s strangest star,
a flickering globe of light whose sporadic and unpredictable output has baffled astronomers for years.

But now the study of Boyajian’s star is being promoted as a research model that could help in one of the most intriguing of all scientific quests:
finding intelligent life on other worlds.

This is the argument that Oxford University astrophysicist Prof Chris Lintott will make at a public lecture
– Is it Aliens? The Most Unusual Star in the Galaxy
– at a Gresham College lecture in Conway Hall, central London on Monday.

His prime target will be Boyajian’s star, sometimes nicknamed Tabby’s star after scientist Tabetha Boyajian,
in the constellation Cygnus whose odd dimming and brightening has been the subject of intense study by space probes and observatories in recent years.

“Its behaviour is extraordinary,” Lintott told the Observer.
“It has rapid, random bursts where its brightness drops dramatically and then returns.
There is no pattern to it.
It flickers as if somebody was playing with its dimmer switch.
There is no other star like this in our galaxy.”

Boyajian’s star was studied in detail by the Kepler space observatory in 2012 when its erratic behaviour was first uncovered.
These observations indicated that a huge mass of matter circles the star in tight formation and sporadically blocks its light.
But what was the nature of this vast mass of material?
Dust rings, disintegrating comets and swarms of asteroids were all put forward as explanations.

However, most attention went to the theory, proposed by scientists at Penn State University, that the eclipsing mass could be a huge #alien #megastructure.

#Boyajian #star
theguardian.com/science/2024/a

The Guardian · ‘Is it aliens?’: how a mysterious star could help the search for extraterrestrial lifeBy Robin McKie
Public
Benjamin Carr, Ph.D. 👨🏻‍💻🧬

A #stoneage wall stretching for nearly a mile over the seabed in the Bay of Mecklenburg at the bottom of #BalticSea may by the oldest "#megastructure" in #Europe. Named the #Blinkerwall, it rests under about 70 feet of water and the best guess is that it was constructed by hunter-gatherers by a lake or marsh in about 8,000 B.C.
theguardian.com/science/2024/f

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