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.
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.
Take an Interactive Tour of Our Colossal Milky Way Galaxy
Fly Through the Milky Way Galaxy!
4:47
THIS is the True Shape of the Universe...
Find out why the vast majority of the universe we inhabit is made up of empty space in this informative and well-researched video.
9:58
Would You Live On the Moon? Discover the Possibilities...
Did you know that the human race actually has the cash and resources available to start building a base on the moon today? Find out more here.
46:50
Deep Science: Why is Our Universe the Way It is?
Get ready to understand the Universe like never before...
2:39
Science Lesson: Why is Space Black?
This video will explain why exactly space is the color it is - black.
10 Fascinating Facts About the Subconscious Mind
10 facts about the way the subconscious mind works
This New Blood Pressure Drug Could Be a Game-Changer
Zilebesiran, an investigational drug that is showing profound success in late-stage clinical trials is offering hope for millions who struggle to keep their blood pressure in check.
Chocolate Exposed! Here's What It Does to Your Brain!
Just what is it that makes chocolate so irresistible to so many people around the world? Find all of the answers in the article.
19:27
20 of the Most Infamous Tech Product Flops In History
Here's a look at some of the most infamous and biggest technology failures in recent history.
0:55
China's G1 Robot is Showing Some Incredible Moves
The G1 is a new robot developed in China and in this video shows some amazing moves.
5:41
Witness the Leading New Electronic Devices of 2026
The experts at CNET and PCMag were on the floor, and they've got their favorites. Let's dive in.
Will We Ever Solve Our Universe's Most Complex Mysteries?
Here are 8 of the biggest unsolved mysteries from the world of physics.
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.
These Optical Illusions Will Shock Your Mind!
Optical illusions create miscommunication between our eyes and brain making, us see things that are not really there or not see things that are right in front of us. See for yourself.
2:11
Here are Some Unique Tricks You Can Do at Home With Salt!
This video shows us a few interesting magic tricks that you can do anytime using salt, ice, and other items you can find at home.
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!
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.
20:32
History: Did the Trojan War REALLY Happen?
The Trojan War, the most famous of the ancient wars, fought by thousands of men for ten long years on the beaches of the famed city of Troy. Was all that real?
1:08
Boston Dynamics New Robot Can Move Almost Like a Human
Watch the latest in robotics in this video.
These 14 Forgotten Robots Promised So Much...
This collection showcases 14 cool vintage robots that were supposed to change everything.
42:14
Physicist Michio Kaku: The Universe in a Nutshell...
Physicist Michio Kaku explains the fundamental nature of our universe
4:45
Woah! Learning to Play Music Has This Effect on Your Brain
Learning how to play an instrument can do wonders for our brain...here's how!
Superwood: A New Material That Could Replace Steel
After decades of relying on steel—a material that produces nearly two tons of CO2 for every ton manufactured—builders may soon have access to something far more sustainable and surprisingly stronger: Superwood.
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.
8 Biggest Mysteries Still Surrounding the Human Body
Although modern science has revealed much about the human body, there are some things that still remain unknown. Here are the 8 biggest mysteries about it.
New Research Shows Eating Sweets Won't Make You Crave More
A groundbreaking new study challenges conventional wisdom, suggesting our preference for sweet tastes may be more stable than we think.
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!
10:59
Fascinating Science: How Sand is Turned Into Glass
Have you ever looked through a window and wondered how it was made from simple beach sand? This video shows you that incredible process.
The First Valentine's Day Was Not That Long Ago...
Let us take you on a fun history lesson with these 10 first-ever things that started way back in history and remain to this day.
2:06
Can Your Brain Get to Grips with These Weird Illusions?
I could have sworn what I was seeing in this video was real! But it wasn't. It was all just an illusion.
17:03
What is a Ballistic Missile and is Its Purpose?
Why is the ballistic missile so feared, and what exactly qualifies it as such - will all be explained in this informative video.
5:14
Earth 2125: A Vision of the Future of Our Planet
Exploring what Earth could look like in 2125 reveals exciting potential.
2024's Biggest Breakthroughs in Science We Must Celebrate
These recent scientific breakthroughs could change the world.
10:46
Neat Life Hacks To Help You Remember Things Better
A lot of us tend to forget the simplest things at times. This video provides some neat tips to help boost your memory.
Extraordinary Inventions By Tesla That Were Never Built!
Nikola Tesla was a scientist too advanced for his time. Here are some of the inventions he never had a chance to build.
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.
11:05
Science: Can AI Preserve Our Most Precious Memories?
Technologist Pau Aleikum Garcia talks about synthetic memories.
4:01
What Lies Within the Planet's Deepest Hole? Find Out Here
Learn all about Russia's Kola Superdeep Borehole, which at a depth of around 12km, makes it the deepest hole that mankind has ever dug into our planet.
The Most Remarkable Medical Breakthroughs of 2024
Here’s a look at some breakthroughs in medical innovation this year.
33:02
The Entire Story of Earth in 30 Minutes!
The story of our planet, from birth to the adult, ancient planet we see before us today - all in just half an hour.
34:33
Is China Number 1 in Global Technology?
In this video, we’ll take a closer look at the new developments hitting the market — and what they could mean for the future of transportation.
4:49
This Video Shows You a Different Way to Look at the World
You’ve heard of the fourth dimension but do you know what it is? This TED-Ed video helps uncover a bit of the mystery.
16:31
Why Building a Perpetual Motion Machine Is Impossible
Since the Middle Ages, scholars have been trying to build the mythical perpetual motion machine. Was it all in vain? Is it even possible to build such a machine?
21:25
How Every Nuclear Power Got Its Atomics
This video will explain how each nation earned the complex and controversial title of nuclear power.
7 Discoveries of Albert Einstein that Changed the World
The 7 biggest discoveries of Albert Einstein and how they changed the world forever.
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.
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