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.
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.
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.
Whoa! I Can't Believe Technology Has Gone So Far...
From vending machines that dispense cars to mind-reading sleep devices, these complex inventions will blow any tech-enthusiast away!
21:51
What Will the Universe Look Like in 10 Quintillion Years?
These questions take us beyond science into the realm of imagination, as we contemplate the ultimate fate of our Universe and everything within it.
42:14
Physicist Michio Kaku: The Universe in a Nutshell...
Physicist Michio Kaku explains the fundamental nature of our universe
5:06
The Only Manmade Object That Will Last Forever
This copper discus contains 116 images we launched into space for aliens to see
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.
1:14:42
Documentary: How Did Our Universe Come From Nothing?
Can “nothing” truly become “something”? In this video, we’ll dig into this mind-bending question.
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.
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.
25 Pics Showing How People in the Past Imagined the Future
Let’s see how the people of the past imagined the future and find out if their fun predictions came true with these 25 vintage pictures
Wow! Who Knew That Jupiter Was So Mesmerizing?
Take a look at Jupiter like you've never seen it before!
10:50
Remarkable! This Is How the Universe Developed...
Watch this time lapse of the entire universe - starting with the big bang and culminating in the appearance of homo sapiens.
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.
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.
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.
4:05
Kirobo: First Robot in Space!
It was one small step for robot and another giant leap for mankind...
13:55
WATCH: What Is the Fingerprint of God's Creation?
The golden pattern, describes the mathematical code of the universe. Is this the scientific evidence of God's will and plan?
The 7 Million Dollar Math Problems Facing Mathematicians
Here is a plain-English tour of all seven millennium math problems, what solving each one would mean for the rest of us, and the remarkable stories behind the two solutions so far.
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!
Why It's So Hard to Get People to Change Their Stance
You feel that your knowledge is broader because you've read and researched a lot on the topic, but the other side still isn't convinced, even when you present facts and statistics. Why isn't that enough?
10:46
12 SUPER COOL Military Inventions You’ve Never Seen
Check out this list of amazing new military innovations. They will transform warfare in the near future!
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.
5:10
Science Lesson: A Simple Guide to Chaos Theory
This is the story of chaos theory, and how it transformed our understanding of reality.
The Tiny Antarctic Flower That Could Help Feed the World
This modest little plant, known as the Antarctic pearlwort, has just handed scientists something remarkable: a genetic blueprint that may one day help our crops survive a warming, drying world.
Nobody Believed These 5 Scientists, But They Were Right
These 5 scientists were shamed and ousted, or rudely ignored, although years later, their "crazy" theories turned out to be true...
4:51
The Oldest Medicines That Have Stood the Test of Time
Learn about some fascinating old medicine and general healing practices that have survived for thousands of years.
There are Some Great Secrets Found in Mathematics...
Numbers hold some great secrets - they even tell us about life!
These Are the Miracles That Happen in Our Bodies Every Day
There is a lot that happens inside our bodies every single day. Did you know any of these facts?
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.
5:50
Why Do We Sometimes Hallucinate? Find Out Here!
In this informative TED-Ed video, Elizabeth Cox details the science of hallucinations.
Fewer Than 50 People in the World Have This Blood Type
Read here about the rarest blood type in the world, which makes life for those who have it full of unexpected, unpleasant surprises...
Will We Ever Solve Our Universe's Most Complex Mysteries?
Here are 8 of the biggest unsolved mysteries from the world of physics.
11:40
6 Of the Earliest Known Parasites Ever Found
Get to understand and learn about the earliest parasites discovered by scientists.
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.
Earth Is So Incredible: I Was Stunned by These 50 Facts
Here's a post that will explain to you just what's truly, scientifically amazing about our planet Earth. I'm gobsmacked.
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.
36:24
Ever Wonder How a Steel Locomotor Works?
Let’s take a closer look at the engineering behind these compact workhorses.
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.
5:17
How Exactly Do We Hear? All is Revealed Here!
In this informative TED-Ed video, Douglas L. Oliver explains the complete science behind hearing.
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.
7:15
Toilets: The Greatest Medical Advancement in Human History
While toilets make some people laugh, they are actually a deadly serious medical advancement. This video explains what toilets mean to civilization.
The Ancient Maya - Cutting-Edge Tech Reveals Shocking Facts
An ongoing archeological project in Guatemala used novel laser technology and found over 60,000 undiscovered Ancient Maya structures.
4:13
What Does Medicine ACTUALLY Do In the Body? Fascinating.
What really happens in our bodies when we take medicine, have you ever wondered? This video will answer your question.
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.
20 Useful Facts About the Science of Cooking
The science behind cooking is not often thought of, but it plays a crucial role in a dish turning out right. Here are 20 facts on the science of cooking.
18:14
Are These Vintage Kitchen Gadgets Any Good?
Will any of the vintage kitchen gadgets stand the test of time or outperform their contemporary alternatives?
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