I don't know about you, but I'm an individual that has always been fascinated by the big questions in life, such as what happens to us when we die, or what time actually is. That's why it's always a good day for me when I come across a documentary that goes a long way toward formulating reasonable answers to those questions. To celebrate the beauty of our world and the vastness of our universe, I've made a collection of the finest "big question" documentaries just for you.
To watch a documentary, just left-click on any of the photos below with your mouse. If you want to watch another, just click on the 
button in the upper right corner of the video. If you wish to view the documentary in full size, the full screen button is located on the bottom right of the video player. Happy viewing!
Images (including cover) by Deposit Photos.
Travel From the Sun to Pluto With Our Interactive Guide!
The solar system is a fascinating place, and we wanted to bring you an interactive journey that you can use to travel through it. Enjoy the journey!
7:17
What on Earth Is Quantum Computing? Find Out Here
This short video below explains everything you need to know about quantum computers.
Discover the Biggest Science & Tech Breakthroughs of 2017
Explore six of the most fascinating advances that will help shape humanity's future in many different ways.
4:15
Where Will the Exploration of Mars Lead Us? Find Out Here
This detailed documentary explains exactly what we know about Mars so far, and what we're all expecting to find in the years to follow.
42:14
Physicist Michio Kaku: The Universe in a Nutshell...
Physicist Michio Kaku explains the fundamental nature of our universe
Test Your Knowledge of Our Solar Neighborhood!
This quiz will put your knowledge of our solar system to the test!
Science News: AI-Designed Drugs Move to Human Trials
Isomorphic Labs, is positioning itself to begin human clinical trials of medications designed entirely through artificial intelligence, marking a potentially transformative shift in how we develop life-saving treatments.
Phone Overheating? Use Our Guide to End The Problem!
Is your cell phone overheating? If so, read this handy guide, which will help pinpoint the source of the problem and offer a solution for fixing it.
5:47
This Genius Child is a Better Calculator than a Computer
This ‘human calculator’ could likely outpace you entering the numbers into a calculator.
21:51
This Mind-Blowing Talk Explores the Nature of Reality
In this video, cognitive scientist, Donald Hoffman, attempts to answer this mind-blowing question in this incredible TED talk.
A Quantum Leap? Revolutionary Technique Discovered
Scientists at Singapore University have developed a groundbreaking manufacturing method powered by artificial intelligence that may revolutionize how we understand and create quantum materials at the atomic level.
2:17:01
Astronomy: What is Beyond the Edge of the Universe?
In this video, we explore what modern astronomy reveals about the universe’s boundaries—if they even exist.
Science FIRST: A Fully Created Brain Inside a Computer?
Could a Computer Ever "Run" a Human Brain? Scientists Just Took a Big Step
10 Fascinating Psychological Facts You Should Know About
Psychology is the science of studying the individual and the things that make us, as humans, tick. These 10 psychological facts you've never heard of before will make for fascinating reading material.
These 14 Forgotten Robots Promised So Much...
This collection showcases 14 cool vintage robots that were supposed to change everything.
There are Some Great Secrets Found in Mathematics...
Numbers hold some great secrets - they even tell us about life!
4:26
Despite Looking Similar, Cats Are MORE Diverse Than Dogs!
Who's more diverse, cats or dogs? This video answers this question once and for all, the it might surprise you...
Enjoy This Fascinating Collection of NASA's Best Photos!
Here are 15 of NASA's most amazing recent pictures, along with brief explanations of exactly what is going on in each one.
These Underwater Craft Are Changing Marine Science
Here's a look at the most remarkable machines currently expanding our understanding of the underwater world.
Alzheimer's: What Recent Breakthroughs Have Taught Us
Now, you can discover 4 new studies that show how to do this in ways you haven’t heard of.
Find Out How Some Elderly People Stay Sharp into Old Age
Some old people have better memories than people half their age. This could be the reason why...
4:57
Mjøstårnet - The World’s First Wooden Skyscraper
Mjøstårnet is an 18 story tall skyscraper towering over the Norwegian countryside. What makes it so special is that it's made entirely out of wood...
2:01
What Does the Appendix Actually DO?
Dr. Berg explains, in this video, all about the appendix and what it actually does in our body.
What Your Phone Habits Say About Your Mental Health
These phone habits might indicate underlying anxiety—and paying attention to them could help you better understand your mental health.
8:48
Fascinating: What Around Us is Invisible?
The Invisible Things that Turn the World...
5:56
What on Earth Is a Black Hole? This Video Explains All...
What on Earth are black holes, how do they affect us, and should we be at all worried about their existence? Find out here.
9 of the Greatest Unsolved Mysteries About the Universe!
The universe has been around for close to 14 billion years, but it still holds many mysteries that continue to perplex scientists. Here's 9 of them!
6 Signs That Someone is Listening on Your Cellphone Calls!
With technology advancing all the time, there is the ever-increasing chance of our phones being tapped. Here are 6 signs that your phone could be tapped.
10 Declassified U.S. Military Secrets That'll Astound You
Government military secrets can range from amusing to absurd to downright terrifying, but they are all extremely intriguing. Here are 10 such secrets.
22:35
Neuralink Update 2025: The Most Incredible Moments
Welcome to our 2025 Neuralink update, where we’ll take you through the most incredible and groundbreaking moments from the past year.
Here Are the 16 Oldest Household Objects in the World
If you think ancient life is remote, these pre-historic household items will make you think again. Just look at how old they are!
3:07
The Speed of Light Visualized in a Magnificent Video
Have you got the patience? Watch, in scale, just how long it takes light to travel from Earth to Mars
14:21
Mark Rober’s $60 Million Science Experiment
YouTube’s favorite mad scientist is launching his biggest mission yet: a $60 million reimagining of STEM education
Hubble Telescope: 35 Years of Incredible Photos
Exploring 35 years of reality-changing, universe-enhancing photos that opened the sights of outer space to us all.
Anti-Aging Science in 2026: What's Real and What's Hype?
Here's an honest look at where anti-aging medicine stands in 2026 - the promising, the disappointing, and the surprisingly simple things that still beat almost everything in a pill bottle.
2:56
Watch as a Fun-Filled Day of Balloons Turns to Disaster!
The 1986 Cleveland Balloon Festival was meant to be a truly joyous occasion but instead quickly turned into a grave tragedy
These Ancient Inventions Have Got Scientists Stumped!
Here are 12 items from long ago which prove that our ancestors possessed knowledge and skills far more advanced than we once believed them to be.
Science in 2025: 8 Developments That Could Change it All
Here are some of the most exciting trends in science and healthcare to keep an eye on.
13 Forgotten Phone Designs That Were Too Odd to Survive
From pen-shaped dialers to phones that clipped onto your clothes, here’s a look at the most unusual phones ever made.
11:43
Learn While Laughing: The Incredible Tardigrade
If you love nature and you love laughing, this incredible series of nature videos are a great way to spend a few minutes.
9:03
24 Unbelievable Abilities Your Body Has
The human body is a complex and endlessly fascinating machine, and it might be even more sophisticated than you know...
27:25
This Man Gave ChatGPT a Body. This is What Happened.
What if you could build a robot that learns everything from scratch, for just eighty dollars?
9:13
Want to Travel Quickly Through Space? Try Using a Wormhole
If you want to know what a wormhole is and how it is supposed to work, then you've come to the right place!
5:06
The Only Manmade Object That Will Last Forever
This copper discus contains 116 images we launched into space for aliens to see
Uncover the Secrets of the Universe in These Documentaries
This list of riveting space documentaries will help you unlock the mysteries of the universe and beyond.
Absolute Zero: The AI that Doesn't Need People to Develop
Imagine an AI that doesn’t need humans to teach it how to code—it creates its own coding challenges, solves them, and gets smarter all on its own. This isn’t science fiction; it’s a groundbreaking development called Absolute Zero
Travel From the Sun to Pluto With Our Interactive Guide!
The solar system is a fascinating place, and we wanted to bring you an interactive journey that you can use to travel through it. Enjoy the journey!
Satisfy Your Curiosity About the Universe with These Q&As
Discover more about the universe by reading through these facts.
Meta Unveils New Glasses that May Change Sports Forever
META has revealed a new line of AI-powered smart glasses: Oakley Meta HSTN
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