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10 Things About the Universe That we may Never Understand

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10 Things About the Universe That we may Never Understand

An exploration of 10 aspects of the universe that we may never understand, no matter how long we study science.

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10 Things You Never Knew About The Earth

The third rock from the sun, our home, planet Earth is full of mysteries.

From the secret ocean flowing beneath the Earth's crust, to the science of how life on Earth began, AllTime10s brings you, the 10 things you didn't know about Earth.

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25 Space Facts That Will Both TERRIFY And AMAZE You

25 Space Facts That Will Both Terrify And Amaze You | List25
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Space, the final frontier. There is still very little that we actually understand about the vast universe that we live in. However, what we do know is that space is very clearly trying its best to kill us all. From deadly radiation to exploding super-stars, the galaxy is dangerous enough to make even the bravest (or craziest) astronauts think twice before deciding to exit our nice, protective atmosphere. Still, the human race is determined to go out and explore the cosmos, so just to make sure we know exactly what we're getting into, here are 25 Space Facts That Will Both Terrify And Amaze You.

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The Speed of Light
The Moon
Black Holes
Gamma Rays
Zero Gravity
Cold Welding
Alien Life
Rogue Planets
Travel Times
Extreme Temperatures
The Darkness
Magnetars
Musculoskeletal Atrophy
Venus
Dark Matter/Dark Energy
Background Radiation
The Expanding Sun
Hypernovae
Electromagnetic Vibrations
Everything Can Kill You
Time Dilation
Hypervelocity Stars
Solar Flares
Depressurization
The Big Crunch/Big Rip

Outro Links:
25 Recent Space Discoveries That Blew Our Minds:
25 Shocking Things That Are Not As Dangerous As You May Think (Featuring Cody's Lab):

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10 SETI Messages That We May Not Want to Receive

An exploration of alternative SETI messages that may not say hello.



Papers:


Searching for Interstellar Communications Cocconi and Morrison, 1959



Intelligent life in the Universe By Carl Sagan and Iosef Shklovski, 1962

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Misconceptions About the Universe

Can we see things travelling faster than light?
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Thanks to Prof. Geraint Lewis for input on earlier drafts of this video.

The expanding universe is a complicated place. During inflation the universe expanded faster than light, but that's something that actually happens all the time, it's happening right now. This doesn't violate Einstein's theory of relativity since nothing is moving through space faster than light, it's just that space itself is expanding such that far away objects are receding rapidly from each other. Common sense would dictate that objects moving away from us faster than light should be invisible, but they aren't. This is because light can travel from regions of space which are superluminal relative to us into regions that are subluminal. So our observable universe is bigger than our Hubble sphere - it's limited by the particle horizon, the distance light could travel to us since the beginning of time as we know it.

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Is there a border we will never cross? Are there places we will never be able to reach, no matter what? It turns out there are. Far, far more than you might have thought…

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How Far Can We Go? Limits of Humanity.

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history of the entire world, i guess






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Amazing facts about the universe

The #universe is so huge! It’s impossible to even begin to fathom, much less quantify, its approximate size. We’re finding new mysteries so quickly; it’s becoming more and more obvious that the universe will never cease to amaze us. When we look into the night sky, and see billions of stars, we begin to understand that people are only a small part of this a huge, infinite expanse. That said, does the concept of humanity lose all significance? On the contrary! As part of this vast plane of existence, we’re a part of something great. We can take pride in living within such a fascinating, harmonious, and delicate balance known as our Universe. Scientists constantly invest in new research so that we can all learn even more about it’s hidden wonders. Hello! You are on channel Top 5 Top 10 and we’ve got 25 amazing facts about the universe coming at ya!

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#cosmos #astronomy #factsaboutspace #facts #universefacts #galaxies

10 Ways Alien Life Could be Radically Different from Earth

An exploration of alternative hypothetical biochemistries different from that of earth life that could serve as a basis for exolife.

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What we know for certain about the universe—and what we don't | Michelle Thaller

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If we ever discover the true size of the universe—is it infinite or just too big to measure?—we'll likely have galaxies to thank. The trillions of massive star clusters we've observed are sending light from the early universe back to us. But our measuring instruments—the strongest of which is NASA's Hubble Space Telescope—aren't powerful enough to detect light from furthest points of the universe. But in 2020, the James Webb Telescope should be able to, revealing a truer number of galaxies and perhaps the boundaries of the universe itself.

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Michelle Thaller: Evie, you ask a wonderful question: how many galaxies are there?

And this is something that we actually don’t know the answer to, but I can tell you a wonderful story about what we do know.

So let me first talk about what a galaxy is. And a galaxy is a family of stars, but usually in the hundreds of billions of stars. We live in a galaxy called the Milky Way and there are about 500 billion stars, we think, in the Milky Way Galaxy. Galaxies are absolutely huge.

The Milky Way Galaxy is about 100,000 light-years across, and that’s not really a number I can get my mind around, seeing as one light-year is about six trillion miles, so our single galaxy is 100,000-times-six-trillion miles across. It’s absolutely huge.

The best analogy I know is that if you think about the sun—the sun is a giant thing, the sun is so big you can fit a million Earths inside it. It’s really, really big. And if we made the sun the size of a dot of an “i”, so pretend that the sun is only the size of—like take a regular page of a book, look at the dot of an “i”, if the sun were that big, how big would our one Milky Way Galaxy be? It would be about the size of the earth. So that’s how big a single galaxy is.

If the sun were the dot of an “i”, the Milky Way galaxy would be roughly the size of our planet.

Now how many galaxies do we know of?

And this is a wonderful result from the Hubble Space Telescope. The Hubble Space Telescope decided to try to answer that question, and what it did is it looked at an area of the sky that, as far as we knew, was blank, it was just black; we couldn’t see many stars there, we didn’t see any galaxies there, and it decided to take a very, very deep distant look at the universe.

Now, the way the Hubble Space Telescope (and any camera) works is it works kind of like a “light bucket.” You can actually open up the eyes of the telescope and tell it to just keep staring, and the longer it stares the fainter and more distant objects you can see.

For those of you that like photography, it’s called doing a time exposure. You leave your camera open for a certain amount of time and you can see fainter and fainter things.

Well, incredibly, the Hubble Space Telescope kept its eyes open on this one little part in the sky for more than a month, and it just let any light come and build up this beautiful image, and what we discovered is that in this empty part of the sky—empty we say!—we counted over 5000 galaxies. Five thousand galaxies we didn’t even know were there. They were just so faint we’d never seen them before.

When we finally had a sensitive enough telescope up in space and we were able to keep it staring at a tiny little part of the sky for a month 5000 galaxies turned out to be hiding there that we’d never seen.

So, how much of the sky was this tiny little part that the Hubble Space Telescope looked at?

So let’s go back to the dot of an “i”. So think about the dot of an “i” in a book, and now hold of that book at arm’s length. It’s a tiny little point, you can almost barely see the dot of an “i” held at arm’s length. That’s how much of the sky the Hubble Space Telescope counted 5000 galaxies in.

And if you do the statistics, if you take that little dot in the sky, and by the way we’ve done this, we’ve taken other deep images in different regions of the sky, and we get about the same count of galaxies anywhere we look.

If you do the math, tiny little dot all over the sky, 5000 galaxies in each dot, there are actually several trillion galaxies that we can see with the Hubble Space Telescope if we had the time to observe the entire sky.

So we know that there are several trillion galaxies that the Hubble Space Telescope can see, but is that really the number? Is that how many galaxies there really are?

The universe we think is far larger than we’re able to see right now.
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Ten of the Top Scientific Facts in the Bible

If it's true that the Bible contains scientific facts that were written thousands of years before man discovered them, the implications are staggering. These facts would be evidence that the Bible is the word of God, and its promise of Heaven and threat of Hell are therefore not to be mocked or ignored.

Ten of the Top Scientific Facts in the Bible is a half-hour of awe-inspiring and faith-building video, filled with ancient biblical truths—the earth’s free float in space, the dinosaur and why it disappeared, laws of quarantine, the earth being round, and much more.

This is a powerful resource to encourage Christians, and to challenge the most hardened skeptic to take the claims of the gospel seriously.

Excellent! This video will captivate you. -Jeff Seto, Aerospace Engineer & author.

This video is a part of the Living Waters Lightning Productions resource line. This line is focused on creating simple yet powerful videos that can be used as effective evangelistic tools to reach the lost. The simplified nature of these new productions (in contrast to our higher budget and graphics-intensive movies) will enable us to produce more videos, and in a shorter amount of time.

Watch more free videos and get other resources by Ray Comfort and Living Waters at

10 Ways We May Have Already Detected Alien Life

An exploration into ten potential ways that we may have already detected alien life in the universe.

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10 Unsettling Solutions to the Fermi Paradox

An exploration of ten of the most unsettling solutions to the Fermi Paradox, or the question of are we alone and if not, where are they?



Papers:

The Sustainability Solution to the Fermi Paradox, Haqq-Misra and Baum, 2009



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10 Unsettling Solar System Possibilities

An exploration of ten unsettling possibilities pertaining to our solar system.





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5 "Impossible" Things That Can Happen On Other Planets

A lot of things happen on Earth, but there are still some things that just don't ever happen here. But, that doesn't mean that what's impossible here is impossible everywhere else in the universe. Whether it's clouds that rain rocks or glass, wind that's 29 times faster than sound, having 2 shadows or even being able to fly in some places, this is a collection of some of the most ridiculous places that we know of so far in our strange universe.

This video was done in a collaboration with Second Thought, and you can check out his video here!

If you're curious about flying on Titan and the research into that, I've attached a paper written by the Department of Physics and Astronomy at the University of Leicester dated October 22nd 2013 which goes into a lot more detail than I could afford. Here it is;

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Videos explaining things. Mostly over topics like history, geography, economics and science.

We believe that the world is a wonderfully fascinating place, and you can find wonder anywhere you look. That is what our videos attempt to convey.

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Questions No One Knows the Answers to (Full Version)

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In the first of a new TED-Ed series designed to catalyze curiosity, TED Curator Chris Anderson shares his boyhood obsession with quirky questions that seem to have no answers. (Introducing the series Questions no one knows the answers to)

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10 Scientifically Impossible Places That Actually Exist

The Seven Wonders of the Natural World may have been named too quickly. Wonders like The Grand Canyon and Victoria Falls are certainly big, and anyone who sees them will surely be impressed—but sheer size isn’t enough to truly leave a person in awe.
There are other places in this world, though, that are far stranger. Places that seem almost alien, as if they could only exist on a planet that evolved separately from our own. These are places that scientists have had to struggle just to understand how they ever could have been formed. Places that will truly make you wonder—not just because they’re beautiful, but because they seem to follow scientific laws that don’t exist anywhere else on earth. Here are 10 Scientifically Impossible Places That Actually Exist

#Science #impossibleplaces #Actuallyexist



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7 Things We Don't Know About the Ocean

The ocean covers 70% of the planet, but humans still don’t know very much about it. In this episode, Hank discusses seven mysterious ocean topics.

Hosted by: Hank Green
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Why we might be alone in the Universe

There are trillions upon trillions of stars and worlds in our Universe. Faced with such large numbers, it's tempting to conclude that there must surely be other life out there, somewhere. But is this right? Could the probability of life beginning be a number so small that we are alone? A video essay by Professor David Kipping.

Further reading and resources:
► Chen, Jingjing & Kipping, David (2018), On the Rate of Abiogenesis from a Bayesian Informatics Perspective, Astrobiology, 18, 12:
► Hanson, Robin (1998), Must Early Life Be Easy? The Rhythm of Major Evolutionary Transitions:
► Benzene in space materials and story:
► Columbia University Department of Astronomy:
► Cool Worlds Lab website:

Music is largely by Chris Zabriskie ( and is licensed under a Creative Commons Attribution license ( in order of appearance;
► The Sun is Scheduled to Come Out Tomorrow (
► Music from Neptune Flux, We Were Never Meant to Live Here (
► Cylinder Five (
► Music from Neptune Flux, Stories About the World That Once Was (
► Waking Up by Atlas, licensed through SoundStripe.com:
► Cylinder Two (
► Piano cover of S.T.A.Y. (Hans Zimmer) byt Jordie Eskes:

Video materials used:

► Intro/outro video by Miguel Aragon of Johns Hopkins University with Mark Subbarao of the Adler Planetarium and Alex Szalay of Johns Hopkins using Sloan Digitial Sky Survey data:
► Bacteria videos from Nikon Small World competition: and
► Tour of the J. Craig Venter Institute by Hedrich Blessing Motion and Sound:
► Tardigrade footage:
► Yellowstone park footage:
► Bill Nye interview with Rita Braver aired on CBS Sunday Morning July 10 2016:
► Neil deGrasse Tyson interview with Charlie Rose aired on PBS May 26 2015:
► Carl Sagan interview with Charlie Rose aired on PBS May 27 1996:
► Brian Cox interview on This Morning, ITV aired December 2 2014:
► Milky Way animation by Stefan Payne-Wardenaar:

Films clips used:
► Star Trek: The Next Generation
► Them! (1953)

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10 Places Science Can't Explain

Some of our planet's most mysterious places seem to defy the laws of science. Here are some of such.




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The devil's kettle waterfall is believed by some to be a gateway to another universe or even to hell itself. The two streamed waterfall has baffled geologists for decades as no one can work out where the water flowing into the kettle leads. It's as if it simply disappears. But that's not the only mysterious water structure. In the amazon river is now known to be a boiling river hot enough to kill any creature to fall into it. It was thought nothing more than a myth until it's recent discovery and no one knows why the water is hot enough to boil.

In India stands a small village known for having a high twin rate. It's obvious why the settlement is now known as twin town but less obvious why so many twins are born here. Suggested answers include the claim that government experiments secretly changed the genetics of locals decades ago.

Perhaps the most mysterious location is the zone of silence in Mexico, a place known for magnetic phenomena and as a dead zone for radio. You will receive no radio signal while in the zone and don't expect your compass to be reliable. Also watch out for mutated animals or strange alien like figures - those are never a good sign.

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