What If? · Nera · Fiction
The Tide That Failed to Return
On a coast of living arches, keeper Seli must discover why the water is missing—and what is moving beneath the crossing.
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What If? · Fiction
What If There Is Life Beneath Europa’s Ice?
Join an imagined robotic expedition into a dark ocean—and discover the science behind the story.
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Alien life
What Is the Habitable Zone?
Why the right distance from a star is only the beginning—and why a promising planet may have no life.
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Alien life
The Wow! Signal: What Did We Detect?
Understand 6EQUJ5, the famous 72-second observation and what follow-up research can tell us.
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Alien life
What Is a Dyson Sphere?
Explore star-sized energy collection, Dyson swarms and the search for infrared clues.
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Alien life
Where Could Life Exist in Our Solar System?
Explore Mars, Europa, Enceladus and Titan—and the difference between a possible habitat and evidence of life.
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Alien life
The Fermi Paradox Explained
If other technological civilisations are possible, why haven’t we found them?
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Alien life
The Drake Equation Explained
Understand the seven factors and the assumptions behind estimates of detectable civilisations.
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Alien life
Could Aliens Detect Earth?
Explore the signals and clues a distant observer might be able to detect.
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UFOs & sightings
A Line of Lights in the Sky: Could It Be Starlink?
A practical guide to checking a possible satellite train against your time and location.
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UFOs & sightings
UFOs and UAP: What Does Unidentified Mean?
Separate an unexplained observation from evidence for an extraterrestrial explanation.
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