Extraterrestrial Intelligence
Before we Develop Self-Replicating Machines to Explore the Universe, we Should Figure out how to Turn Them off Again
In a recent study, aerospace engineer Prof. Alex Ellery proposes a biologically-inspired method that could keep self-replicating robots from running…
Snooping on Alien Messages Passing Through the Solar System
Researchers at Penn State University have studied a new technique that could use a star’s ability to focus and magnify…
Why Would an Alien Civilization Send Out Von Neumann Probes? Lots of Reasons, says a new Study
A new study takes a look at Von Neumann probes and asks the really important questions: "why would aliens send…
What is the Kardashev Scale?
In 1961, Russian-Soviet astrophysicist Nikolai Kardashev published a paper where he introduced the Kardashev Scale, a means of classifying extraterrestrial…
What is the Arecibo Message?
In 1974, the famous Arecibo Message was sent into space, humanity's first and only attempt at messaging extraterrestrial intelligence.
If Alien Probes are Already in the Solar System, Maybe we Could Detect Them Calling Home
According to a new study, alien probes may permeate the galaxy, and could be detected in the Solar System when…
If Aliens Are Out There, We’ll Meet Them in a Few Hundred Million Years
A new study indicates that aliens are probably out there, occupying half of the Universe, and we'll likely meet them…
Oumuamua Isn’t an Alien Probe, Because Aliens can Learn Everything They Need About us With Telescopes
A new study offers a new take on why 'Oumuamua could not have been an alien probe: a lack of…
According to the Math, it’s Highly Unlikely That an Intelligent Civilization is Located at Alpha Centauri
In a new study, a pair of Harvard astrophysicists did the math on whether or not BLC1 is an extraterrestrial…
Beyond “Fermi’s Paradox” XVI: What is the “Dark Forest” Hypothesis?
A recent addition to the list of possible resolutions to the Fermi Paradox: nobody is broadcasting because they don't want…