Re: the race for warp drive

Le 2024-07-03 à 00:38, R Kym Horsell a écrit :
> In alt.astronomy a425couple <[email protected]> wrote:
>> On 6/27/24 06:50, [email protected] wrote:
>>> Warp Theorists Say We've Entered an Exotic Propulsion Space Race to Build the
>>> World's First Working Warp Drive
>>> The Debrief, 27 Jun 2024
>>> An international team of physicists behind several revolutionary warp
>>> drive concepts, including the first to require no exotic matter, says
>>> that recent unprecedented breakthroughs in physics and propulsion have
>>> launched the world powers into a Cold War-style, 21st-century space
>>> race to build the world's first working warp drive.
>>>
>>
>> My opinion - Yes, we need better propulsion for space travel.
>> But NO, we do not necessarily need to go faster than
>> the Speed of Light.  That feat, may indeed be impossible.
> ...
> 
> Then you're in luck. The initial warp drives will likely be sub-light.
> The FTL version so far is only "just" possible using bags of energy
> and exotic matter.
> 
> But the universe managed to go from 0 to 100 bn light years in only 14 bn y
> so at least we have something to aim for because "anture did it first". ;)
> 
The speed limit is for thing travelling through space. NOT for space itself.
Going faster than light would imply manipulating the geometry of 
space-time locally in a controlled manner.

You can't just say that the universe is 100 billion light year across. 
We don't know the actual size of the universe. We may never know. It may 
be impossible to know.