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.
2:39
Science Lesson: Why is Space Black?
This video will explain why exactly space is the color it is - black.
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!
Incredible! These TVs from the Future Will Blow Your Mind!
Television companies are nothing if they're not ambitious. Have a look at 5 of the most advanced forms of TV technology that we can't wait to see in action!
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.
7:17
What on Earth Is Quantum Computing? Find Out Here
This short video below explains everything you need to know about quantum computers.
46:50
Deep Science: Why is Our Universe the Way It is?
Get ready to understand the Universe like never before...
14 Retro Inventions That Stunned Crowds Back in the Day
These inventions were the talk of the town back in the day.
8:14
What Would You Do if You Had an Extra Thumb?
This revolutionary invention has the potential to revolutionize the field of prosthetics.
10:04
11 Practical Technologies That Will Help Fight Flooding
These amazing innovations will be real handy during a flood.
8 Important Inventions That Were a Complete Accident
It might be interesting for you to learn that some very important scientific innovations were born as a result of an accident.
20 Amazingly Simple Inventions That Make Life Easier
Some wonderful inventions can fix some of the most annoying little problems that bug us every single day. Here are 20 of the most inventive ideas I've ever seen that I can't believe no one has invented before.
Study: New Link Found Between Parkinson's and the Gut
A recent study has identified gut microbes likely involved and linked them to decreased riboflavin (vitamin B2) and biotin (vitamin B7), suggesting a potential treatment
20:04
Emotions Explained: The Science Behind How We Feel
Neuroscientist and psychologist Dr. Richard J. Davidson answers some fascinating questions about emotions you would never expect.
9 Great NASA Inventions That Took the World By Storm!
For around six decades, NASA have been inventing top-notch products. Here are nine great examples!
Study Says: With Age, Come Certain Cognitive Abilities
a study published in August 2021 in the journal *Nature Human Behavior reveals surprising findings that challenge this assumption and may be of great interest to all of us.
The Difference Between Mined and Lab-Created Diamonds
If you're seriously considering buying a loved one a diamond, then we highly recommend that you read this informative guide first!
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.
12 Steps That Help to Explain Einstein's Famous Theory
Have you ever wondered what Einstein's Theory of Relativity is all about? If you have, here is an easy-to-understand explanation!
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?
4:22
eSIM vs Traditional SIM: What’s the Big Difference?
Are eSIMs and iSIMs the future of connectivity?
10 Unanswered Mysteries You've Always Wondered About!
You might not have thought about the most curious cases of the bizarre things that we encounter every day.
INTERACTIVE: A Guide to the Workings of the Human Body
The human body is the most complex machine known to man, and the amount of things it has to do to keep us alive is incredible. View this interactive guide now.
5:16
Fascinating: How Fast Does Our Brain Operate?
Ever wonder at what speeds our thoughts move?
7:56
Asteroid Mining: Why it's the New Trillion Dollar Business
Get ready to learn how asteroid mining could potentially transform our world.
8:19
You Won't Believe What Passes for a Phone in North Korea
You won't believe what phones look like in North Korea!
These Photos Show How Dependent We are On Smartphones
Technology has taken over and these funny (but true) photos help to drive this fact home.
15 Beautiful Carl Sagan Quotes on the Stars and the Cosmos
A look at some profound quotes on the universe by famous astronomer and cosmologist Carl Sagan.
9:34
Was Roman Concrete Really Superior to Our Own?
How did Ancient Romans make such durable concrete that it still lasts today?
The Facts You Didn't Know About the Human Body...
Discover 120 fascinating and surprising facts about your body you may not have known. Going over most of the body parts, you will learn so much you never knew about the body we all use.
1:48
Boston Dynamic's Robot Does Some Incredible Things...
Boston Dynamics shows us again what her lead robot can do.
Science News: New Wonder Mushroom Cleans the Air
Let's learn about a magical new mushroom that is not only enriching the soil for farmers but also capturing CO2 from the air!
25 Feats of Engineering that Leave Everyone Amazed
The amount of planning and sheer brain power it took to design and execute these structures, proving once again that there are true geniuses out there.
8 Fascinating Heartbeat Facts You Never Knew Before
These heartbeat facts will leave you astounded.
I Never Knew These Stunning Facts About Our Universe
If you thought you understood the universe, you'll be completely floored by this insane facts.
3:10
Watch the Best HD Panorama Photo of Mars Ever Taken
Watch an incredible 1.8-Billion-Pixel panorama of the planet Mars that was recently captured by NASA's Curiosity rover.
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!
Is It 3024 Already?! – 14 Wildly Futuristic Things
These revolutionary ideas are about to change our world.
20 Peculiar Microscope Photos That You Really Must See
An unseen world exists at our fingers, and thanks to these wonderful micrographs, we can get a glimpse into that dimension.
26 Incredible Facts About the Human Mind
The human brain is an interesting and powerful organ, which is why we've gathered 26 interesting facts about exactly how human psychology works.
Science Breakthrough: An Immunization Against Skin Cancer?
This scientific breakthrough offers hope for those who are struggling with skin cancer. You are now invited to discover more about this revolutionary vaccine.
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
5:08
Erecting a Behemoth: Installation of an Offshore Oilrig
How do they install an offshore oilrig? This video will show you, step by step, how it is done.
2:52
New Robots: This Robot Uses Both Wheels AND Legs
This robot can get just about anywhere in little time because it uses both wheels and legs to get over most hurdles.
These Wacky Inventions of the Past Appear Odd to Us Today!
These vintage tech inventions may look very interesting or even incredible, but their practicality today is questionable...
Incredible New Bionic Arm Fuses With Woman's Nerves
Karin's bionic hand is real sci fi, making her one of the first true cyborgs.
10 Tech Products You Must Double-Check Before Buying
Beware! These tech products are most commonly faked.
8:05
This Giant Tank Will Unlock the Universe’s Big Mysteries
Japan is building a huge underground tank inside a mountain to help unlock the many mysteries of the universe.
