Are aliens building Dyson Spheres? Astronomers find 60 candidates (video).

Hold onto your telescopes, space enthusiasts! The cosmic neighbourhood just got a lot more intriguing. In an astonishing revelation, astronomers have identified 60 potential Dyson sphere candidates among millions of stars. Could this be evidence of extraterrestrial megastructures, or are we simply being misled by Mother Nature’s quirks? Let’s dive into the cosmic mystery that’s got everyone buzzing.

The Grand Search for Cosmic Powerhouses

First proposed by physicist Freeman Dyson in 1960, the concept of a Dyson sphere is the stuff of science fiction dreams. Imagine an advanced alien civilisation building colossal structures around their star to harness its energy. It sounds wild, but it’s a logical step for any species looking to power their interstellar gadgets. Fast forward to today, and two new studies have rekindled the hunt for these cosmic power stations.

The Modern-Day Treasure Hunt

In two recent papers, researchers embarked on a data-driven quest through the stars, analysing a staggering five million main-sequence FGK stars up to 6,500 light-years away. Their quarry? Mid-infrared excesses that could hint at the presence of Dyson spheres. And lo and behold, they found 60 stars with unusual infrared signatures that defy current natural explanations.

The Red Dwarf Discovery

Leading the charge in Sweden, Matías Suazo and his team at Uppsala University zoomed in on red dwarfs, identifying seven potential Dyson sphere candidates within a cozy 900 light-years from Earth. These stars are radiating up to 60 times more infrared heat than expected, a signature that could suggest partial Dyson spheres or Dyson swarms—a collection of satellites orbiting the star.

As Suazo quipped in New Scientist, “The most fascinating explanation could be actual Dyson spheres.” Well, colour us intrigued!

A Swarm of Sun-like Stars

Meanwhile, in Italy, Gabriella Contardo and her team at the International School for Advanced Studies sifted through data to find 53 more candidates among sun-like and larger stars. These stars, some 6,500 light-years away, also exhibit mid-infrared excesses that raise eyebrows among astronomers. Could these also be Dyson spheres, or is something else afoot?

Natural Phenomena or Alien Engineering?

Before we break out the champagne for our new alien neighbours, it’s important to remember that extraordinary claims require extraordinary evidence. While the data aligns with what we’d expect from Dyson spheres, it’s not a slam dunk just yet. Other explanations, though currently elusive, could emerge.

Perhaps these stars are playing host to unusual protoplanetary disks or debris that we haven’t accounted for. Or maybe they’re positioned just right to confuse our instruments with background galaxies. The possibilities are as vast as the universe itself.

What’s Next in the Cosmic Detective Story?

The next step in this celestial investigation involves more precise observations. Enter the James Webb Space Telescope, our shiny new tool for peering deeper into the cosmos. Follow-up studies will be crucial to confirm or debunk these tantalising candidates.

As co-author Jason Wright from Pennsylvania State University put it, “Either we’ll rule them all out and say Dyson spheres are quite rare and very hard to find, or they’ll hang around as candidates and we’ll study the heck out of them.”

Are we on the brink of discovering alien megastructures, or have we simply stumbled upon a new natural phenomenon? The jury’s still out, but one thing’s for sure: the hunt for Dyson spheres is more exciting than ever. Whether these candidates turn out to be artificial or natural, they promise to teach us more about the cosmos and our place within it. Stay tuned, space fans. The universe has many secrets, and we’re just beginning to uncover them. And who knows? Maybe one day, we’ll send a friendly wave to our industrious alien neighbours, hard at work on their stellar power stations. Until then, keep watching the skies—and keep those imaginations soaring.


Colonel Frog is a long time science fiction and fantasy fan. He loves reading novels in the field, and he also enjoys watching movies (as well as reading lots of other genre books).

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