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The Earth won't age massively, you'll age at a snail's pace. (heh)
Also what problems do you get if you can manage consistent acceleration in a vacuum at faster speeds? The ship should make it fine right? Earth will age massively though.
A half-myth: It gets harder to push a ship faster as it gets closer to the speed of light
This is a half-myth because it depends on the frame of reference. It is true for those watching from the planetary reference frame. For those experiencing the journey (in the ship's reference frame) it is not true. For both the planetary frame and the ship's reference frame, the ship will change speed in a Newtonian way—push it a little and it speeds up a little, push it a lot and it speeds up a lot. However, in the planetary frame the ship will appear to be gaining mass due to its high kinetic energy, and the mass–energy equivalence principle. Should the engines be giving a constant thrust, this will result in progressively smaller acceleration due to the higher mass it is required to accelerate.
From the ship's frame, the acceleration would continue at the same rate. However, due to Lorentz contraction, the galaxy around the ship would appear to become squashed in the direction of travel, and a destination many light years away would appear to become much closer. Traveling to this destination at subluminal speeds would become practical for the onboard travellers. Ultimately, from the ship's frame, it would be possible to reach anywhere in the observable universe, without the ship ever accelerating to light speed.
originally posted by: starwarsisreal
a reply to: carewemust
In Halo, space travel consist of going through slip space.
Basically, they open a hole in one place to another dimension and then coming out to another place.
Actually much more plausible and safer.
originally posted by: carewemust
originally posted by: Phage
a reply to: carewemust
Summary: You're traveling at the speed of light and point a flashlight behind you. The light beam will travel outward just like you were standing still? If so, my mind is blown.
We've already traveled at light speed, we do it everyday, our ideas over the internet are measurably traveling at the speed of light.
What forces? Electromagnetism? Gravity? 'Fraid not.
then you have to understand that there are forces slowing down the speed of light in our universe.
Light is not affected by gravity. Spacetime is. Light does not change its velocity, spacetime changes its shape. Light moves at the speed of light, in a straight line. Spacetime bends and makes it look, to us, like light is being affected but it is space that is being affected. Light travels at the speed of light, in a straight line.
It's not supernatural, but if light is affected by gravity then the light we see and measure will be affected by forces of gravity we don't yet understand.