This is not happening in Syria, Yemen...or Moldova...or anywhere near you.
A team of astronomers has successfully crowd-funded a year’s worth of observatory time to investigate the hypothesised ‘alien megastructure’orbiting a mysterious star called KIC 8462852.
The team raised over US$100,000
in under a month for the study, and they hope it will buy them enough
time to conclude once and for all what’s causing KIC 8462852’s light to
dim in ways scientists have never seen before.
In case you’ve missed the controversy surrounding KIC 8462852 - an F-type star that lies 1,480 light-years away - here’s a quick rundown.
The story began in 2015, when Yale astronomer Tabetha Boyajian led a team of citizen scientists called the Planet Hunters in examining data collected by the Kepler space telescope.
KIC 8462852
- now nicknamed Tabby’s Star after Boyajian - was just one star out of
hundreds that Kepler marked as abnormal after studying the night sky
using the transit method.
Astronomers use this method to identify exoplanet candidates by
watching a star’s light until it flickers or dims as an exoplanet
crosses in front of it.
During their analysis,
things got weird. Normally, when Kepler spies a possible exoplanet
using the transit method, the suspected star’s light only dims by about 1
percent, but Tabby’s Star dimmed by a remarkable 22 percent, and stayed
that way for up to 80 days at a time.
Despite the lack of evidence, many hypotheses abound about the structure, including a massive comet swarm, which was quickly debunked.
One of the most intriguing ideas is that it could be a Dyson sphere - a hypothetical structure described in several science fiction stories
that works like a giant solar panel, used by an advanced civilisation
to collect energy from its host star. While there’s obviously no proof
that such technology exists, it’s pretty cool to think about.
“Aliens should always be the very last hypothesis you consider, but
this looked like something you would expect an alien civilisation to
build,” Jason Wright, an astronomer from Penn State University in the
US, told The Atlantic last year.
Since this discovery, no one’s been able to come up with an
explanation that can’t be adequately debunked. But now, thanks to the
successful Kickstarter campaign, Boyajian and her team hope to figure it all out.
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