How Large is the Universe? 4k

The universe has long captivated us with its immense scales of distance and time. How far does it stretch? Where does it end, and what lies beyond its star fields and streams of galaxies extending as far as telescopes can see?

These questions are beginning to yield to a series of extraordinary new lines of investigation and technologies that are letting us to peer into the most distant realms of the cosmos. But also at the behavior of matter and energy on the smallest of scales. Remarkably, our growing understanding of this kingdom of the ultra-tiny, inside the nuclei of atoms, permits us to glimpse the largest vistas of space and time. In ancient times, most observers saw the stars as a sphere surrounding the earth, often the home of deities. The Greeks were the first to see celestial events as phenomena, subject to human investigation rather than the fickle whims of the Gods.

One sky-watcher, for example, suggested that meteors are made of materials found on Earth... and might have even come from the Earth. Those early astronomers built the foundations of modern science. But they would be shocked to see the discoveries made by their counterparts today. The stars and planets that once harbored the gods are now seen as infinitesimal parts of a vast scaffolding of matter and energy extending far out into space.

Just how far began to emerge in the 1920s. Working at the huge new 100-inch Hooker Telescope on California's Mt. Wilson, astronomer Edwin Hubble, along with his assistant named Milt Humason, analyzed the light of fuzzy patches of sky... known then as nebulae.

They showed that these were actually distant galaxies far beyond our own. Hubble and Humason discovered that most of them are moving away from us. The farther out they looked, the faster they were receding. This fact, now known as Hubble's law, suggests that there must have been a time when the matter in all these galaxies was together in one place.

That time, when our universe sprung forth, has come to be called the Big Bang. How large the cosmos has gotten since then depends on how long its been growing and its expansion rate. Recent precision measurements gathered by the Hubble space telescope and other instruments have brought a consensus...

That the universe dates back 13.7 billion years. Its radius, then, is the distance a beam of light would have traveled in that time ... 13.7 billion light years. That works out to about 1.3 quadrillion kilometers. In fact, it's even bigger.... Much bigger. How it got so large, so fast, was until recently a deep mystery.

That the universe could expand had been predicted back in 1917 by Albert Einstein, except that Einstein himself didn't believe it until he saw Hubble and Humason's evidence. Einstein's general theory of relativity suggested that galaxies could be moving apart because space itself is expanding.

So when a photon gets blasted out from a distant star, it moves through a cosmic landscape that is getting larger and larger, increasing the distance it must travel to reach us. In 1995, the orbiting telescope named for Edwin Hubble began to take the measure of the universe... by looking for the most distant galaxies it could see.

Taking the expansion of the universe into account, the space telescope found galaxies that are now almost 46 billion light years away from us in each direction... and almost 92 billion light years from each other. And that would be the whole universe... according to a straightforward model of the big bang. But remarkably, that might be a mere speck within the universe as a whole, according to a dramatic new theory that describes the origins of the cosmos.

ABOUT US
Here at SpaceRip, we value the exploration of the unknown. We surpass boundaries for the sake of uncovering the mysteries of the cosmos and what they may tell us about our origin and our future. With our videos, we hope to educate our viewers on how we fit into the universe, and more so how we can do our part to better it.

[fiarusgaming]

Never change this narrator. We can find this info in any text book, it's the narrator that makes this channel special.

[thomasewing]

I come just to hear this guy's voice

[Wowreally]

Where did this guy and this channel go!? One of my all/time favs

[UseAbuseReuse]

"The whole universe, is to the observable universe - as the observable universe is to an atom."
Like, how do you even begin to comprehend that size?

[donscicchigno]

Such a pity TLP doesn't produce any longer.

The quality of Spacerip documentaries still remains unmatched after many years.
Everything's perfect: scripts, music, images, narration, accuracy ... simply perfection!

Have you ever found anything comparable?

[marekmarkowski]

Even "How to brush teeth" video narrated by Dick Rodstein would be fascinated experience!

[Nskawtea]

It makes me wish I was born about a thousand years from now just to see if we made it to other galaxies

[ZeeshanArifSyed]

I love this voice!!! It instills curiosity about the universe.

[Stringbean]

Dick Rodstein, ..the perfect narrator and voice actor. Born in 1949, so he's in his 70s now. Look up his biography, it's quite impressive. he also narrated for wildlife documentaries too.

[adam.]

Absolutely amazing video! I've always wondered the size of the universe and we are so grateful to be in the age of so much advancements that we can at least get a grasp of how large it is and the knowledge we know is amazing. The size of the universe is just absolutely unfathomable and it is always just mind blowing. Never get tired of pondering, Keep up the videos!

[Noodles_]

Watching this in lock down keeps me sane !!!

[dko]

The amount of ads is unbearable and ruins the whole experience. Besides this, good video.

[deaftodd]

I wouldn't be surprised if those antimatters and matters were spreading unevenly beyond our known or theoretical universe that may be bouncing around to shrink or expand. How charming and quirky. Nothing strange about that.

[josephjackson]

There's billions of universe's of different colours & gasses & different gravitational forces, & highly advanced lifeforms moveing around from 1 galaxy to another as quick as a fly in a car .we are just less than a pinprick in it all .

[Wowreally]

This channel is AWESOME. Thanks for the upload!

[zpe]

Watched this many times, top 100 videos all time for me.

[scottmcintosh]

"The Universe is big, REALLY big. You just wouldn't believe how vastly, hugely, mind-bogglingly big it really is." 📘👾

🌌🔭

[BlueRice]

when i was little, the earth used to be big because i couldnt imagine all the countries in the world. after growing up and took an airplane i realized the earth is big but yet so tiny. seen almost major culture food and hear their language - earth is rather small - somewhat depressing. then it comes to money, i understand the wealthy, and the rich. there's millionairs ranging from 4--10 millions. then there are even richer people that are in range of 50-100 millions. and so forth. i can comprehend that. anything big i can almost measure it without being surprise. then there's the universe. it been years, and no matter how much i come across a video that depict how big the universe is, its still blew up my mind. to understand how big it is, i used traveling speed and trillions of other galaxy. light speed. even if you can travel at light speed, to get one place to another, it still can take you over 3 billions years to reach certain place. if ever try to reach the edge of the universe, get this, the space is expanding faster than the light speed itself. so, you know how much space is being created every second. if you can grasp how big the universe is, now you understand there are a chance that life or intelligence life like earth itself can exist. they may be some species as smart as human and probably still living in tribal like some tribe in the amazon that technologies hasnt been discovered yet - or they already at our level in technologies and are unable to communicate with us. they probably sending radio signal in all direction to see if they can communicate with other intelligence life, but they are so far out in the distant the signal will probably never reach us giving the rate of space is expanding - and if it did, it takes probably billions of years before it reach us.

[PMW]

Q: How large is the universe?
A: considerable

[TaterChip]

Public service announcement:
Make sure the video quality is the highest you can go before watching. Carry on.