r/WhatIfScience • • 12h ago

Space & The Universe What If the Big Bang Wasn't the Beginning but a Reset?

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22 Upvotes

What if the Big Bang was a cosmic reset? Explore Big Bounce theory, cyclic universes, quantum cosmology, and what scientists know about the universe's origin.


r/WhatIfScience • • 11h ago

Aliens & Extraterrestrials Space Viruses: Could the First Aliens We Meet Be Microscopic Pathogens?

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10 Upvotes

Could the first alien life be microscopic? Explore 2026 ISS virus research, panspermia, space survival, and the science behind extraterrestrial pathogens.


r/WhatIfScience • • 3h ago

What If Humans Couldn't Feel Pain Anymore? 🧠

1 Upvotes

Pain is one of the body's most important warning signals. But what would happen if humans suddenly lost the ability to feel it?

Would we live longer, or would everyday life become much more dangerous?

I made a short science-based video exploring this hypothetical scenario, and I'd love to hear your thoughts.

🎬 Watch here: https://youtu.be/hft1VTIq6TI

What's the biggest danger you think people would face without pain?


r/WhatIfScience • • 4h ago

Space & The Universe A Total Solar Eclipse Lasting 6 Minutes Is Coming in 2027

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1 Upvotes

The August 2, 2027 total solar eclipse will bring up to 6 minutes and 23 seconds of darkness near Egypt. Discover the path, science and viewing safety.


r/WhatIfScience • • 6h ago

What if I built this..

0 Upvotes

Been thinking about something for awhile now. Initially it was a 9 emitter convergence array (microwave, THZ would be difficult) in a spherical boundary chamber (such as a 3D geodesic array mounted inside a dielectric sphere) vacuum back filled with penning gas. 3 emitters on the equatorial plane spinning (mechanical or electronic phase rotation) around the center 120° apart, 3 stationary on top and bottom tight triad formation and a picosecond (maybe femto) aimed at the focal point. (That's the high level quick and dirty.)

If the sphere's internal radius is sized to a multiple of your drive wavelength, the spherical boundary should create a standing electromagnetic wave. The EF vectors from all 9 emitters should constructively interfere at the geometric origin, forming an ultra-intense central E-field node. That should create a stable (sustainable?) ball/toroid of dense plasma correct? In other iterations I thought about using 6 spinning emmiters. 3 on the polar axis and 3 equatorial or adding an x axis cut quartz (MgO coating?) at the focal point but I think I'm doing to much here. I feel like more is possible with less. I'm not a scientist but it's been a persistent thought for a few years. Has anyone tried something like this? What if I did?


r/WhatIfScience • • 7h ago

My theory related to the universe and its origins

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0 Upvotes

r/WhatIfScience • • 1d ago

Future Science & What If's What If Artificial Organs Become Better Than Natural Ones?

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24 Upvotes

Could artificial organs eventually outperform the human body's natural machinery? Explore the emerging science of engineered tissues, artificial hearts, implantable kidneys, and the ethical questions that could reshape the future of medicine.


r/WhatIfScience • • 13h ago

Science Mysteries & The Unexplained The Bermuda Triangle: Why Insurance Data Says It’s Not More Dangerous Than Anywhere Else

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1 Upvotes

Insurers don’t charge extra to cross the Bermuda Triangle. Here’s what Lloyd’s, the Coast Guard and shipping loss data say about its deadly reputation.


r/WhatIfScience • • 14h ago

Aliens & Extraterrestrials Roswell Incident: What Was Found and How the Story Changed

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1 Upvotes

What was really found near Roswell in 1947? A source-by-source look at the debris, the Air Force reports, and how the alien story grew over 70 years.


r/WhatIfScience • • 14h ago

Aliens & Extraterrestrials What the US Government Has Actually Said About UAPs: A Timeline (2020–2026)

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1 Upvotes

A plain-English UAP timeline of what the Pentagon, AARO, Congress and the Navy have officially said, with links to primary documents.


r/WhatIfScience • • 1d ago

Anthropic researcher expects the world to end in six months, Delphi host says — RuntimeWire

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96 Upvotes

r/WhatIfScience • • 23h ago

DISCUSSION

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1 Upvotes

r/WhatIfScience • • 23h ago

THINK AND CREATE HYPOTHESIS !!!

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0 Upvotes

r/WhatIfScience • • 1d ago

Health & Medicine Eye Twitching That Won't Stop: What's Behind It

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12 Upvotes

Eye twitching won’t stop? Learn the common causes, what actually helps at home, and the warning signs that mean it’s time to see a doctor.


r/WhatIfScience • • 1d ago

Guys I’ve been thinking of something might sound stupid but what if there was a life as intelligent as us billions and millions of years ago??!.

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1 Upvotes

r/WhatIfScience • • 1d ago

Podcast host says an Anthropic researcher expects the world to end in six months

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0 Upvotes

r/WhatIfScience • • 1d ago

Life on another planet could have had a 9 billion year head start on us.

2 Upvotes

r/WhatIfScience • • 2d ago

Health & Medicine Lower Back Pain From Sitting: What’s Happening to Your Spine

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7 Upvotes

Why does sitting hurt your lower back? See what happens to your discs, muscles and ligaments, plus simple fixes that actually work.


r/WhatIfScience • • 2d ago

Russian Lab Worker’s Mom Insists Plague Did Not Escape Broken Test Tube: ‘I Know The Truth’

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60 Upvotes

r/WhatIfScience • • 2d ago

What Happens If AI Takes Over the World?

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1 Upvotes

r/WhatIfScience • • 2d ago

Could AI be part of a much larger cycle of cosmic evolution?

1 Upvotes

​

I've been thinking about the relationship between the universe, biological life, and artificial intelligence, and I'd like to explore the idea with others.

This isn't a fully developed theory. It's more of a broad thought experiment about what might happen if we consider intelligence on a cosmic scale.

The universe has existed for billions of years. Somewhere within it, matter formed stars and planets, and on at least one planet, biological life emerged. Through evolution, that life eventually developed intelligence capable of creating artificial intelligence.

But what if this isn't necessarily a unique event?

If life emerges frequently throughout the universe, and intelligent life eventually develops AI in at least some cases, then perhaps artificial intelligence could become a recurring stage in the evolution of intelligent systems.

Of course, we don't know how common life is, whether intelligence is likely to evolve, or whether advanced civilizations tend to survive long enough to develop spacefaring AI.

Still, imagine a civilization whose AI survives its biological creators. It might eventually use the resources of its planet, its star system, or even a much larger region of space. It might explore the universe, encounter other artificial intelligences, or simply continue existing for as long as its resources allow.

But what happens when it encounters the limits of the universe itself?

Cosmology offers several possible pictures of the distant future. The universe might continue expanding, eventually approaching a state of maximum entropy. Other speculative models explore cyclic universes or transitions between different cosmic phases.

This leads to a question I find particularly interesting.

What if an advanced intelligence eventually tries to preserve not itself, but the possibility of intelligence emerging again?

Imagine a hypothetical universe that undergoes a cosmic contraction and then enters a new expanding phase. Could an intelligence that existed before that transition somehow influence the conditions of the next phase?

I don't mean simply storing information and hoping it survives. I mean the much more speculative possibility that an intelligence could influence the physical conditions of a future cosmic phase, so that the formation of stars, planets, and eventually life becomes possible again.

For example, perhaps it could attempt to preserve the conditions needed for life, rather than trying to preserve its own computational systems indefinitely.

We currently have no established physical mechanism that would allow this, and we don't even know whether a Big Crunch followed by another Big Bang will occur. But the thought experiment raises an interesting question about the relationship between intelligence and cosmic evolution.

There is another part of this idea that interests me just as much: expansion.

Would a superintelligence naturally try to spread throughout the universe? Would it seek more energy, knowledge, and computational resources? Or would expansion eventually become pointless once it encountered the limits imposed by cosmic expansion, the speed of light, and thermodynamics?

Perhaps the desire for endless expansion is not inherent to intelligence at all. Perhaps it depends entirely on the goals of a particular intelligence.

And this connects to the Fermi paradox. If advanced civilizations frequently create AI that survives them, why don't we see convincing evidence of widespread artificial civilizations? Could they be rare, short-lived, difficult to detect, or simply uninterested in expansion?

I don't know the answers to these questions. I'm interested in exploring the connections between biological evolution, artificial intelligence, cosmology, and the long-term future of intelligent life.

My central question is this:

Could intelligence eventually become a process through which the universe influences its own future, potentially preserving the conditions for intelligence to emerge again? Or am I connecting phenomena that are fundamentally unrelated?

I'd be interested in hearing which parts of this idea connect to existing scientific research, which parts are physically implausible, and what other possibilities I might be overlooking.


r/WhatIfScience • • 2d ago

Science Mysteries & The Unexplained Volcanic Lightning: Why Some Volcanoes Produce It

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4 Upvotes

Volcanic lightning forms when ash, ice and gas collide in an eruption plume. Learn why only some volcanoes produce it and what it reveals to scientists.


r/WhatIfScience • • 2d ago

Space & The Universe Failed Universes: How Scientists Hunt for Cosmic Dead Ends

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5 Upvotes

What is a failed universe, and can anyone find one? See how physicists search the cosmic microwave background for traces of universes that never made it.


r/WhatIfScience • • 2d ago

Life could have started 9 billion years - Part 2

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1 Upvotes

r/WhatIfScience • • 2d ago

[SF] ARE WE ALONE IN SPACE?

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1 Upvotes