SETI

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…

3 weeks ago

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…

1 month ago

There Could Be Four Hostile Civilizations in the Milky Way

In a series of papers, amateur astronomer and exoplanet researcher Alberto Caballero narrows down who could have sent the Wow!…

2 months ago

Objects That Share the Same Orbit are Common in the Solar System. But we’ve Never Seen co-Orbital Exoplanets. Why?

“Where are all the Trojans” is a question valid in both the study of ancient history and the study of…

2 months ago

Humanity Will Need to Survive About 400,000 Years if We Want any Chance of Hearing From an Alien Civilization

If there are so many galaxies, stars, and planets, where are all the aliens, and why haven't we heard from…

3 months ago

If Aliens Were Sending us Signals, This is What They Might Look Like

An international team of scientists have created a new tool for identifying possible radio transmissions from an extraterrestrial civilization

4 months ago

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…

5 months ago

Astronomers Scan the Center of the Milky Way for Any Sign of Intelligent Civilizations. Nothing but Silence.

Are there civilizations somewhere else in the Universe? Somewhere else in the Milky Way? That's one of our overarching questions,…

6 months ago

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.

7 months ago

A New Way to Detect Alien Megastructures

How do you power a super advanced alien civilization? Soak up a star. We harness the power of the Sun…

8 months ago