Plenty of space. Observable universe!

[LegendKillerRG]

How did people explore/observe 91 billion light years across the observable universe and what's the percentage of observable universe to the total? Few years ago I read that people only observed 4% of the universe but not sure about now. What I don't get is what's the inverse is expanding on...

[virusal19]

The universe is still expending because technically the "Big Bang" hasn't finished yet. Think about this, when a big explosion goes off, you will see a shock wave going in all directions, the shock wave starts out small and keeps getting bigger in all direction, as the explosion expend it leaves a universe behind. 

[FireFox]

One day we're going to be in darkness apart from our own local cluster, also because of the speed everything is expanding and also space time being factored in the galaxies will be effectively exceeding the speed of light in relation to us, the light from those galaxies moving away from us will never be able to reach us.

 

Also another little thing, (I hope I get this right) you can go faster by approaching the speed of light than actually achieving the speed of light, scientist have discovered that when you approach light speed, distances shrink so you can get there faster by achieving a slower speed :P, God I love science

[SirReallySam]

 

? o.O XD

[Levent]

i like her accent  :wub:

its kinda mind blowing that we dont even know how much of the universe we discovered but yet the part we discovered is still pretty damn a lot

[Mentalguy]

How did people explore/observe 91 billion light years across the observable universe and what's the percentage of observable universe to the total? Few years ago I read that people only observed 4% of the universe but not sure about now. What I don't get is what's the inverse is expanding on...

the observable universe is nowhere near that big (its about 28 billion light years diameter). There is no way of knowing the observable universe to unobservable universe. could be 0% or 100%

[mr moose]

https://www.youtube.com/user/DeepSkyVideos

 

 

 

Start watching, they are all from the university of Nottingham, very well respected in there respective fields. 

 

And for those who love to have their heads done over with quantum theory:

 

https://www.youtube.com/user/sixtysymbols

[BAPEsta]

[beebskadoo]

One day we're going to be in darkness apart from our own local cluster, also because of the speed everything is expanding and also space time being factored in the galaxies will be effectively exceeding the speed of light in relation to us, the light from those galaxies moving away from us will never be able to reach us.

 

Also another little thing, (I hope I get this right) you can go faster by approaching the speed of light than actually achieving the speed of light, scientist have discovered that when you approach light speed, distances shrink so you can get there faster by achieving a slower speed :P, God I love science

mind = blown

[gauvinic]

YAY MinutePhysics!

[gauvinic]

One day we're going to be in darkness apart from our own local cluster, also because of the speed everything is expanding and also space time being factored in the galaxies will be effectively exceeding the speed of light in relation to us, the light from those galaxies moving away from us will never be able to reach us.

 

Also another little thing, (I hope I get this right) you can go faster by approaching the speed of light than actually achieving the speed of light, scientist have discovered that when you approach light speed, distances shrink so you can get there faster by achieving a slower speed :P, God I love science

:unsure: I may understand relativity wrong then... From my understanding, as stuff approaches the speed of mass-less particles, the stuffs approaching said speeds shrink relative to their surroundings in order to allow the mass-less particles to remain traveling at the speed of mass-less particles from all frames of reference. They still cover less distance than mass-less particles in the same time frame because their speed relative to the observer is still less than that of mass-less particles. In order for stuffs with mass to go at that speed through space, they would need infinite energy and take up 0 space. However, covering more distance in less time is possible with warp drives. That requires negative energy though, and I'm not convinced NASA has solved the engineering problems regarding how to create negative energy without drowning it out with positive energy. Time will tell.  B)

[mr moose]

:unsure: I may understand relativity wrong then... From my understanding, as stuff approaches the speed of mass-less particles, the stuffs approaching said speeds shrink relative to their surroundings in order to allow the mass-less particles to remain traveling at the speed of mass-less particles from all frames of reference. They still cover less distance than mass-less particles in the same time frame because their speed relative to the observer is still less than that of mass-less particles. In order for stuffs with mass to go at that speed through space, they would need infinite energy and take up 0 space. However, covering more distance in less time is possible with warp drives. That requires negative energy though, and I'm not convinced NASA has solved the engineering problems regarding how to create negative energy without drowning it out with positive energy. Time will tell.  B)

enjoy

 

[beebskadoo]

enjoy

 

 

MY BRAIN HURTS!!!!!!!!

[FireFox]

mind = blown

 

Yea it did mine trying to write it lol

[FireFox]

:unsure: I may understand relativity wrong then... From my understanding, as stuff approaches the speed of mass-less particles, the stuffs approaching said speeds shrink relative to their surroundings in order to allow the mass-less particles to remain traveling at the speed of mass-less particles from all frames of reference. They still cover less distance than mass-less particles in the same time frame because their speed relative to the observer is still less than that of mass-less particles. In order for stuffs with mass to go at that speed through space, they would need infinite energy and take up 0 space. However, covering more distance in less time is possible with warp drives. That requires negative energy though, and I'm not convinced NASA has solved the engineering problems regarding how to create negative energy without drowning it out with positive energy. Time will tell.  B)

 

To be honest I'm not 100% sure, it f**ks with me trying to understand it lol

[gauvinic]

MY BRAIN HURTS!!!!!!!!

lulz. I actually broke the arm on my chair watching that, will upload a pic as proof soon. (although as linus said, is a pic really proof anymore?)

Uploaded!

Holy shit. Why have I never actually watched Monty Python before this? At least I didn't discover them in the middle of a college semester.

[gauvinic]

enjoy

 

Ah yes. SixtySymbols. Love them. Also love all of Brady Haring's (I hope I got that right) other channels. And Big Think, MinutePhysics, all of Veritasium and Vsauce, etc. Youtube is my teacher. Gonna share them with my Grandpa since he got a nexus 7 and internet recently. He loves this stuff too. 88 and still learning. Anyways, the Lorenz contraction only strengthens my point, but perhaps I need to be more clear. There is no possible way, according to our current understanding of the universe, that anything can travel through space at a higher speed than that of mass-less particles. (I've adopted this term for light speed ever since MinutePhysics mentioned it. More precise.) We can arrive at a destination quicker than expected due to the Lorenz contraction, but we cannot outrun light. We can, however, theoretically cause space to move through us, effectively being able to achieve warp speeds (hence the name). And a bit off topic, we need a Science thread. Fairly tech related, since science gives birth to technology.

[mr moose]

Ah yes. SixtySymbols. Love them. Also love all of Brady Haring's (I hope I got that right) other channels. And Big Think, MinutePhysics, all of Veritasium and Vsauce, etc. Youtube is my teacher. Gonna share them with my Grandpa since he got a nexus 7 and internet recently. He loves this stuff too. 88 and still learning. Anyways, the Lorenz contraction only strengthens my point, but perhaps I need to be more clear. There is no possible way, according to our current understanding of the universe, that anything can travel through space at a higher speed than that of mass-less particles. (I've adopted this term for light speed ever since MinutePhysics mentioned it. More precise.) We can arrive at a destination quicker than expected due to the Lorenz contraction, but we cannot outrun light. We can, however, theoretically cause space to move through us, effectively being able to achieve warp speeds (hence the name). And a bit off topic, we need a Science thread. Fairly tech related, since science gives birth to technology.

Yes we need a science thread, a place were we can talk about this stuff, Although with the complexity of some of it I can see a few discussions getting lively. 

 

Not only do we contract to a finite size as we approach the speed of light (I'll keep calling it that so others know basically what I mean) time also slows, this is how relativity explains that two observers will see one physical event occur differently. 

[beebskadoo]

 

lulz. I actually broke the arm on my chair watching that, will upload a pic as proof soon. (although as linus said, is a pic really proof anymore?)

 

 

Uploaded!

 

Sorry abut your chair was it because of the video was funny and you were laughing or did it just break?

[mr moose]

 

lulz. I actually broke the arm on my chair watching that, will upload a pic as proof soon. (although as linus said, is a pic really proof anymore?)

 

 

Uploaded!

 

That's absolute gold right there,  MOnty PpYthOn for the WIN!!!

[beebskadoo]

That's absolute gold right there,  MOnty PpYthOn for the WIN!!!

Love me some python, i actually find ways to sneak videos and clips into topics all of the time. There's a clip for everything

[mr moose]

Love me some python, i actually find ways to sneak videos and clips into topics all of the time. There's a clip for everything

I have noticed...

 

 

 

 

 

Dinsdale...

[beebskadoo]

I have noticed...

 

 

 

 

 

Dinsdale...

[gauvinic]

Sorry abut your chair was it because of the video was funny and you were laughing or did it just break?

I put alot of stress on it. It's my dad's old one. I basically do the equivalent of heavy dips on the arms whenever I slouch and want to get back up. I played lineman in highschool football, so yeah, lots of stess.

[beebskadoo]

I put alot of stress on it. It's my dad's old one. I basically do the equivalent of heavy dips on the arms whenever I slouch and want to get back up. I played lineman in highschool football, so yeah, lots of stess.

Oh well hope you can fix it...