Science question need some nerds.

[Captain N]

Cause your radio is racist?

Apparently my radio needs to check its privilege.

An elaborate lie by crayon manufacturers.

Crayola = Illuminati confirmed!

[staticflare]

When you really think about the speed of light it's insanely fast when being used on earth or around our atmosphere but when used in a much broader sense for example traveling from one galaxy to another it's incredibly slow. Surely there must be something faster than light we just haven't discovered yet. Will it really take us thousands of years to go from one galaxy to another in let's say 3 million years from now? Is hyperspeed from star trek possible?

[Nilinor]

When you really think about the speed of light it's insanely fast when being used on earth or around our atmosphere but when used in a much broader sense for example traveling from one galaxy to another it's incredibly slow. Surely there must be something faster than light we just haven't discovered yet. Will it really take us thousands of years to go from one galaxy to another in let's say 3 million years from now? Is hyperspeed from star trek possible?

There are theories, right now wormholes and "warp drive" are the only real theoretical things that could work, but that depends on how flexible the universe is.

[Garnier Fructis]

Speed is distance divided by duration. You can't move faster than time any more than you can move faster than a mile. Neither distance nor time is measurable by speed.

I dunno, man. I've seen some pretty slow miles.

In cross country.

[apepi]

I also want to note using Pluto and Earth would be bad to use as an example. They move too much, and Pluto especially has a very large range. I would instead use the Sun and the Earth instead as the Sun is more static.

[Kujako]

When you really think about the speed of light it's insanely fast when being used on earth or around our atmosphere but when used in a much broader sense for example traveling from one galaxy to another it's incredibly slow. Surely there must be something faster than light we just haven't discovered yet. Will it really take us thousands of years to go from one galaxy to another in let's say 3 million years from now? Is hyperspeed from star trek possible?

Current physics says that you can't travel faster than light, but you can shorten the distance (see worm holes).

[Nilinor]

As for travelling to the future, the closer the % of the speed of light, the less "perceivable" time you take. If you go 99% of the speed of light for 100 "earth years", a person on earth will watch you for 100 years go that far. To you however, that 100 year journey takes 1 year. This is all caused by time dilation due to the fact that to any observer, light is always traveling 300,000 km/s regardless how fast you are going, in order for it to "appear" that way your experiences have to speed up or slow down to accommodate it.

Relativity is all relative man.

[Stonecloak]

Time and space are related, and the speed of light =/= time. That's why when we see events in the solar system they've already happened a while ago. The universe is expanding rapidly too, so eventually we may not see what we do now.

[staticflare]

Time and space are related, and the speed of light =/= time. That's why when we see events in the solar system they've already happened a while ago. The universe is expanding rapidly too, so eventually we may not see what we do now.

If the universe is expanding then what lies beyond that expansion? What is outside of what we cannot see or observe?

[Kujako]

If the universe is expanding then what lies beyond that expansion? What is outside of what we cannot see or observe?

What we can see and observe is limited by the speed of light, what's outside of the universe is unknown, though there are theories.

Look at it this way, pretend you are no longer a 3D person but instead confined to two dimensions. You really can't do more then speculate as to the existence of a cube when you're confined to a plain.

[May90]

So my question is how can light be as fast as time when light is traveling from let's say earth to pluto it still requires a set amount of time before it reaches it. If light were as fast as time wouldn't it reach Pluto instantaneously? How could traveling faster than light mean going faster than time when light isn't as fast as time itself?

First of all, "light is as fast as time" doesn't make sense.

Now, if we could attack a frame of reference to a photon (light particle), then, indeed, time would be frozen in this reference. Photon would be everywhere along its path at the same time. So yes, you could say it reaches Pluto instantaneously.
The problem is, such a frame of reference doesn't exist, due to the properties of Minkowsky space. In any existing frame of reference, light won't reach Pluto instantaneously.

[Azadina]

This is like some flat earth science thread Seems fun. I have a question too! If light is so fast, then why did earth win a race against it by over 8 minutes?

[Stonecloak]

If the universe is expanding then what lies beyond that expansion? What is outside of what we cannot see or observe?

The universe is like an expanding sort of in-perfect bubble. Beyond that I suppose would be the multiverse theory, which if your head wasn't already blown from our own universe then I'd wait on that. Then multiverse must be in something else right? So, one step at a time, but the argument is kind of believable in that we thought we were the only planet, then we found more, thought we were the only solar system, then found more, thought we were the only Galaxy, ect.

[Ripster42]

Lay off the acid. Words still have definitions, even if you don't understand what they are anymore.

[May90]

If the universe is expanding then what lies beyond that expansion? What is outside of what we cannot see or observe?

What is important to understand here is that the Universe is around 14 billion years old. The most distant quasar we've seen is 12.9 billion light years away; that makes what we see a picture from 1 billion years after Big Bang. Theoretically, we should be able to see things all the way up to ~14 billion light years away. Beyond that, nothing exists, because the Universe didn't exist so far back.

Although, to be very precise, the accelerating expansion of the Universe might make it impossible for us to see beyond a smaller envelope. What's beyond that would not only be unobservable, but also unreachable, so, again, you could say there is nothing, because we can't interact with that something in any way.

[Vizardlorde]

i have it on good authority that noise is gray. All noise.

white noise and pink noise help me sleep

[Vanyali]

white noise and pink noise help me sleep

don't fall for the crayon conspiracy

[Mister Cheese]

This thread is making my head hurt.

[luc54]

don't fall for the crayon conspiracy

Everybody knows brown noise is the best one. Now that I listened to it a bit I'm actually gonna go to bed.

[Adam Jensen]

Light travels at the speed of light, so it "experiences" the maximum time dilation, in that time does not move for a photon. Thus, the photon, in its own perspective, leaves the surface of the sun and strikes the surface of pluto, in an instant, even though from our perspective on earth, it takes about seven hours for the photon to make such a journey.

Relativity is weird.