The Shocking Reason Space is Black! | Part 2

If you've ever wondered why the void of space is black, the answer might not be what you think. Let me explain the REAL reason why space is black and what it means!

[gravoc]

Simple answer: The fabric of spacetime is colorless & transparent. Objects far enough away from us red-shift out of the human-visible spectrum, leaving a transparent & colorless patch of sky. This appears as black, because there’s nothing to illuminate in it’s place.

[MrQwertyification]

Ok, so what does that direct line have to do with the blackness of space?

[ericpowers]

Did you understand this. It was so fast, I have no idea what he's talking about.

[luckyjamesa.valencia]

Basically Space is Expanding amazingly Faster than the Speed of Light. That explains why Space is Dark, because Light couldn't Catch up.

[darksonic]

Basically:
• As light from stars travels through space it shifts into the infra-red spectrum of light which our eyes are not capable of seeing, therefore it appears as if there is no light.

[zyswanson]

Partial answer- Gas and dust clouds block a lot of the light at an insane amount of distance. Light travels only so fast, and space is so vast that a galaxy per 1 million cubic light years is like 1 in 2 billion (don't quote me on that, there's an actual number to the probability, I'm just too lazy to look it up). Plus black holes will also play a role in the amount of light that can escape their gravitational field. (yes Light is affected by gravity). (Yes it involves red shifting and gravitational lensing).
Any other questions?

[_flyingspaghettimonster_]

Since there is virtually nothing in space to scatter or re-radiate the light to our eye, we see no part of the light and the sky appears to be black.

[deboradevos]

This channel is insanely underated, very much information in these short quality videos. Keep it up!

[Ekuy]

my favourite part is where he tell us why space is black !1!1!

[Johnny_C]

Space is black because of the acceleration of the universe's expansion.

The light in the universe shifts toward the invisible, infrared spectrum due to said accelerated expansion.

[danjohnson]

Brightness decreases inverse square law. You need to explain what surface brightness is. Good luck fitting all this into a short, or a hundred shorts!

[R.S.O.]

Light spectrums that the eye can't see is different from capturing light with cameras

[generaleerelativity]

Made it to "Part 2" and still no mention of the fact that space is 90% just that, SPACE! It's black because there's more space in the universe than anything else. Let that sink in and tell me space is not infinite.

[craig]

Space isn't a vacuum otherwise life wouldn't exist

[thedogeater]

To add on to the question you didn't answer human eyes can see only a very small fraction of light waves. The universe is colorful we just need the technology to make the unvisible light to visible hence hub and webb telescopes

[thinthin]

It's not Black, it's African American.No racism allowed.

[stancartmankenny]

this isn't correct. well, it's sort of right - the brightness of any star along a single line is "constant", but only because that constant is 0, because a "line" is infinitely thin. The "paradox" isn't really a paradox because it's just another example of why you can't do math with infinities. So if you recognize what you really want is a cone/frustrum, then the brightness of the star does go down with the square of distance.

[leewhite]

Quick question if anybody can give me an answer and it be great but the question is soon as we leave earths atmosphere and enter space obviously the pressure gets denser but the farther away from earth does it get denser like the ocean when we go further down or no? I’m pretty sure the answer is no but still anyone?

[nebula]

I think we need to learn the inverse square law.

[richardearnshaw]

So we aren't 'bathed' in light as in our own daylight because ALL the light is so distant not that we can't see things but that we only see it directly - in a direct line of sight.
(Does that make sense? It did when I first said it. Aaaargh!)