A Giant Telescope Searched 3I/ATLAS For Signs of Aliens. Here's Why. - ScienceAlert

The system features a super-Earth close to its star's habitable zone. (ESO/L. Calçada) The vast cosmos seems like a cold and lonely place. For all our scouring of the sky, we're yet to find concrete signs of alien life outside of Earth – never mind outside the Solar System. And that's before we even get to technology – telltale signs that an intelligent civilization has developed ways to manipulate its environment that we might be able to detect across interstellar space. That doesn't mean they're not out there. It may mean that we're just not looking hard enough. And now, astronomers in China have used the world's biggest single-dish radio telescope to conduct a deep scan of 33 planetary systems that looked like promising places to search for technosignatures. Most of them turned up precisely the result you might expect – no dice. One was a little more interesting. From the direction of K2-155, a red dwarf some 238 light-years away, came a narrowband radio signal that survived the researchers' initial attempts to weed out interference – that's a type of radio signal that can be difficult to produce without technology.

I am a huge fan of the Alien franchise…mostly. Alien and Aliens were ground-breaking movies and instant classics. Alien 3 had good parts (mostly the great British actors shining up a quickly knocked out script). Alien Resurrection was … not great.  Alien: Romulus was pretty good, despite a dodgy CGI android and a practical effect monster that looked like it was dodgy CGI. But the recent Alien: Earth series was fantastic. However, Prometheus and Alien: Covenant were absolutely dreadful. The bad science in these films made them almost unwatchable. Sadly, the next Alien movie (which was to be helmed by the showrunner of Alien: Romulus and to continue that story) has been taken over by Ridley Scott, and will follow on from his awful Prometheus (2012) and Alien: Covenant (2017).

The Dyson sphere was first proposed by physicist Freeman Dyson in 1960. There are many ways to scour the stars for intelligent life. You can search for radio signatures whose repetitions suggest intentional design, or examine a planet that orbits its star in a so-called Goldilocks Zone conducive for habitation. One of the wildest (but still hypothetically plausible) scenarios involves what’s known as a Dyson sphere.