/sci/ - Science & Math

I have a question about space travel, specifically the relativity and time dilation aspects of it.

they talk about how a space ship would take X amount of time to reach a galaxy going at 90% lightspeed, and how the energy required to accelerate rises exponentially alongside mass, etc. but doesn't all of this information only apply from the observers view? taking time dilation into account, wouldn't things function much differently for the pilot?

say, for example, you got in a ship and instantaneously accelerated to 90% of the speed of light, and traveled to a solar system 10 lightyears away. wouldn't the trip, for the pilot, only take 1 year, as his perception of time would drastically accelerate? at 99% lightspeed, wouldn't the trip only take a little over a month? the universe around him would have experienced 10 years of time, but the pilot himself would have experienced insane travel speeds?

and regarding acceleration, due to time dilation, wouldn't the pilot actually experience something like the reverse of the observer's experience? say he was in a ship that could accelerate at 1% light speed per minute. for every 1% of acceleration he would need more energy, when seen from an outside observer, but the pilot and the ship would be slowing down due to time dilation. the increased energy requirement to accelerate would be negated by the time dilation, so he would see a consistent 1% LS increase every minute, straight up to 99.999...% etc. light speed in only an hour and a half, while the universe aged exponentially around him. realistically going 99% LS would be a massive danger zone, because going beyond it towards 100% LS territory would catapult you to 99.999...% light speed within a minute, exponentially aging the universe into heat death/crunch/etc. in seconds and, realistically, obliterating the pilot.