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re: When, if ever will we have spacecraft that can travel at light speed?
Posted on 2/22/17 at 11:08 pm to bhtigerfan
Posted on 2/22/17 at 11:08 pm to bhtigerfan
are we assuming the speed of light is a constant or variable?
1
Posted on 2/22/17 at 11:09 pm to PaperPaintball92
quote:
What if we developed technology allowing us to travel 1 mph below the speed of light? Could we launch an object forward from, or inside the craft at 2 mph?
Velocities don't add up neatly together when you're near the speed of light due to relativity
Posted on 2/22/17 at 11:10 pm to CLane33
quote:
So if you left the earth at or near light speed and then tried to come back after a substantial amount of time, you would technically find yourself in the future.
Posted on 2/22/17 at 11:11 pm to shotcaller1
Posted on 2/22/17 at 11:17 pm to PhiTiger1764
quote:So, you're saying we could actually walk to the moon? Like this?
So everyone in the world combined walking distance in their lives could almost make two roundtrips to that new solar system.
Posted on 2/22/17 at 11:19 pm to ThePoo
Stephen Hawkings hasn't said anything in 50 years.
Posted on 2/22/17 at 11:22 pm to Rebel
Um, he speaks with his soul, racist bigot
Posted on 2/23/17 at 12:41 am to bhtigerfan
quote:
When, if ever will we have spacecraft that can travel at light speed?
As dumb as it sounds, Star Trek (and other media) were right in that we will never advance as a species until the entire world works together towards a common goal. We can't even balance a damn federal budget, much less travel close to hyper speed or even dream up a warp engine.
We're talking hundreds of years off from anything like that happening unfortunately. No one posting here will be alive to see it.
We can take solace in the fact that 1900-2020 will have produced as much tech and advancements as it did.
I would be happy if we could just work on our energy problems for now. Current battery life and fossil fuels are horrendously inefficient.
Posted on 2/23/17 at 1:49 am to bhtigerfan
Posted on 2/23/17 at 1:53 am to GetEmTigers08
Black holes bra. U dudes need to refresh on your cosmos series
Posted on 2/23/17 at 2:08 am to bhtigerfan
Just several years ago people thought things like the EmDrive were theoretically and physically impossible. To be fair, I highly doubt that we ever touch anywhere close to actual light speed, but we might find a way to bend spacetime and end up "distorting" the laws that we know on Earth. Probably not in our lifetime and with the caveat that we don't destroy ourselves within the next couple hundred years, then we might be able to eventually reach another solar system in about 40-50 years of travel.
This post was edited on 2/23/17 at 2:09 am
Posted on 2/23/17 at 3:30 am to bhtigerfan
quote:
The new galaxy is only 230 trillion miles and 40 light years away!
Um, no. That would be the new exoplanets. Still the same galaxy we're in.
quote:
When, if ever will we have spacecraft that can travel at light speed?
Never. That said, once you really get moving time does slow down. This has been verified to happen exactly as predicted with radioactive nuclei so it isn't just speculation.
Posted on 2/23/17 at 4:03 am to bhtigerfan
I remember reading something about the large hadron collider and how they could accelerate subatomic particles to a high percentage of the speed of light (like 95% maybe?). But to do the same for an atom they calculated it would require more energy than in our entire solar system combined.
I agree with the previous poster in that we could travel by bending space time before we could accelerate even a negligible mass of matter to the speed of light.
I agree with the previous poster in that we could travel by bending space time before we could accelerate even a negligible mass of matter to the speed of light.
Posted on 2/23/17 at 4:30 am to 1BamaRTR
quote:
Light speed is too slow for these insane distances.
Posted on 2/23/17 at 6:42 am to bhtigerfan
quote:
When, if ever will we have spacecraft that can travel at light speed?
Posted on 2/23/17 at 7:04 am to Rebel
quote:
are we assuming the speed of light is a constant or variable
We may never even be able to know this for certain.
Posted on 2/23/17 at 7:47 am to 1BamaRTR
quote:
This. Light speed is too slow for these insane distances.
Light speed too slow?!?
Posted on 2/23/17 at 7:50 am to 1BamaRTR
quote:
This. Light speed is too slow for these insane distances.
Need ludicrous speed.
Posted on 2/23/17 at 7:54 am to HempHead
quote:
Time is experienced relatively. At or near lightspeed, what feels like a few hours or days to you results in (I don't know the exact correlation) possibly years or many, many years having passed elsewhere.
Like most people I have heard about this for years yet it still blows my mind trying to think about it
Posted on 2/23/17 at 8:27 am to GetEmTigers08
Do you even Einstein's equation... if you did you would know it's impossible. 
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