Re: What fundamental barriers must be overcome to make spacetime travel a realit
Depends on what exactly you mean by space-time travel, i'll assume that you meant travel through both time and space by folding space-time.
Space travel by folding or warping space has mathematically already been worked out by physicist Miguel Alcubierre. It involves creating a warp bubble that shrinks space ahead of the ship and expands space behind the ship, much like in star trek. Traveling through time would simply be a extension of this method into the fourth dimension.
However, the energy requirement would be huge, far greater than we could potentially produce with even nuclear power, also it would also require a singularity powerful enough to bend space to the degree we need it to. Currently we are limited to just barely being able to create subatomic singularities that exist only for milliseconds at a time.
In short you need
a colossal power source (antimatter, wich we could theoretically make with modern tech)
a way to make a controled and powerful singularity (again we can theoretically make this with modern tech)
exotic matter particularly matter with a negative mass would make creating the bubble much easier, but we havent found any yet.
So if you have $300 trillian burning a hole in your pocket, you could hire the companies to start making on and have it within a decade or two, there really are no barriers in terms of available technology, you just have to wait for the technology to become affordable.
Malcolm Gladwell teaches "Get over yourself and get to work" for Big Think Edge.
- Learn to recognize failure and know the big difference between panicking and choking.
- At Big Think Edge, Malcolm Gladwell teaches how to check your inner critic and get clear on what failure is.
- Subscribe to Big Think Edge before we launch on March 30 to get 20% off monthly and annual memberships.
It's one of the most consistent patterns in the unviverse. What causes it?
- Spinning discs are everywhere – just look at our solar system, the rings of Saturn, and all the spiral galaxies in the universe.
- Spinning discs are the result of two things: The force of gravity and a phenomenon in physics called the conservation of angular momentum.
- Gravity brings matter together; the closer the matter gets, the more it accelerates – much like an ice skater who spins faster and faster the closer their arms get to their body. Then, this spinning cloud collapses due to up and down and diagonal collisions that cancel each other out until the only motion they have in common is the spin – and voila: A flat disc.
Both panoramic and detailed, this infographic manages to show both the size and distribution of world religions.
- At a glance, this map shows both the size and distribution of world religions.
- See how religions mix at both national and regional level.
- There's one country in the Americas without a Christian majority – which?
Do you have a magnetic compass in your head?
SMARTER FASTER trademarks owned by The Big Think, Inc. All rights reserved.