# Question: Is Light Speed Travel Possible?

## What will happen if we travel faster than light?

But if something can travel faster than light, it can travel backward in time, according to the theory.

In this case, an “effect” could travel back to a point before its “cause” had occurred — for instance, a baby swinging before he gets a push..

## What is a white hole?

In general relativity, a white hole is a hypothetical region of spacetime and singularity which cannot be entered from the outside, although energy-matter and light can escape from it. … In addition to a black hole region in the future, such a solution of the Einstein field equations has a white hole region in its past.

## Do wormholes exist?

Wormholes are consistent with the general theory of relativity, but whether wormholes actually exist remains to be seen. … A wormhole could connect extremely long distances such as a billion light years or more, short distances such as a few meters, different universes, or different points in time.

## Is wormhole travel possible?

A Harvard physicist has shown that wormholes can exist: tunnels in curved space-time, connecting two distant places, through which travel is possible. … “From the outside perspective, travel through the wormhole is equivalent to quantum teleportation using entangled black holes,” Jafferis said.

## Why is travel through a wormhole impossible?

“But there are very strong indications that wormholes that a human could travel through are forbidden by the laws of physics. … “But we have very strong, but not firm, indications that you can never get enough negative energy that repels and keeps the wormhole’s walls open; you can never get enough to do that.”

## Why can’t we travel at the speed of light?

According to the laws of physics, as we approach light speed, we have to provide more and more energy to make an object move. In order to reach the speed of light, you’d need an infinite amount of energy, and that’s impossible!

## Is light year travel possible?

Light in a vacuum travels around 300,000 kilometres (186,000 mi) per second, so 1 light-year is about 9.461×1012 kilometers (5.879 trillion miles) or 63,241 AU. … The fastest outward-bound spacecraft yet sent, Voyager 1, has covered 1/600 of a light-year in 30 years and is currently moving at 1/18,000 the speed of light.

## What is the fastest thing in the universe?

Blazing Speed: The Fastest Stuff in the Universe. A sequence of radio observations shows a plasma blob moving away from a blazar’s core (right) over about 8.4 months. SAN DIEGO — If you’re light, it’s fairly easy to travel at your own speed — that is to say 186,282 miles per second or 299,800 kilometers per second.

## Is Warp 1 the speed of light?

Accordingly, “warp 1” is equivalent to the speed of light, “warp 2” is eight times the speed of light, “warp 3” is 27 times the speed of light, etc. Several episodes of The Original Series placed the Enterprise in peril by having it travel at high warp factors.

## Is anything faster than the speed of light?

There is no limit to how fast the universe can expand, says physicist Charles Bennett of Johns Hopkins University. Einstein’s theory that nothing can travel faster than the speed of light in a vacuum still holds true, because space itself is stretching, and space is nothing.

## Will light speed travel ever be possible?

So will it ever be possible for us to travel at light speed? Based on our current understanding of physics and the limits of the natural world, the answer, sadly, is no. … So, light-speed travel and faster-than-light travel are physical impossibilities, especially for anything with mass, such as spacecraft and humans.

## How close are we to light speed?

We are about 1000–2000 years from 10% light speed travel by magnetic sail combined with Bussard fusion ram jet. But light speed travel will have to be entirely different. It has to be all energy, no material substance.

## Will humans ever travel to other galaxies?

The technology required to travel between galaxies is far beyond humanity’s present capabilities, and currently only the subject of speculation, hypothesis, and science fiction. However, theoretically speaking, there is nothing to conclusively indicate that intergalactic travel is impossible.

## Is light faster than darkness?

Most of us already know that darkness is the absence of light, and that light travels at the fastest speed possible for a physical object. … In this respect, darkness has the same speed as light. However, in some instances, darkness actually moves faster than light.

## How fast is 20% the speed of light?

Traveling at around 20 percent the speed of light—so as fast as 100 million miles per hour—the craft and their tiny cameras would aim for the smallest but closest star in the system, Proxima Centari, and its planet Proxima b, 4.26 light-years from Earth.

## Why can’t light escape a black hole?

The reason nothing can escape a black hole is because within the event horizon, space is curved to the point where all directions are actually pointing inside. The escape velocity from within a black hole’s event horizon is faster than the speed of light, hence light cannot go at that speed and thus cannot escape.