HOW WE WOULD/COULD LOSE WEIGHT WHEN WE ARE CROSSING THE STARS IN THE COSMOS: i was thinking about this and it occurred to me..I don't know how we are going to replace gravity in a vast gigantic space ship....But the lost of gravity in space could work to our advantage....I don't know if we will be able to work out/exercise in a spaceship when we are crossing the stars because of the speed the spaceship is going to be going....But i have 2 ideas to lose weight....For some reason i keep thinking that were are going to use sort of a big magnet in a spaceship, some kind of modified big magnet...So i was thinking if you construct a huge vast spaceship, and you let the magnets be position on certain locations and leave a different area kind of like a chaimber or an entire floor without the magnets...And i have a question...Doesn't loss of gravity eats out your fat and bone mass? Well i was thinking why dont people sit on the floor or chamber where there is loss of gravity and let them lose weight that way, and then let them go back to the other floors where there is the magnet and there is regular gravity....And about the chamber with no gravity you could have a smaller magnet and thus have a regulated gravity or a lesser gravity, like a gravity with a pressurized valve controlling the amount of gravity there is, that way the loss of weight and bone mass will be regulated....And everytime they gain weight they go back to the loss of gravity or regulated gravity floor or chamber in the spaceship....Or you could genetically ingeneer bacteria to eat fat and only fat and produce O2 or water as biproduct....But for this to work you also need to invent a machine that will create water out of gases like in an indirect or direct way....But there is a conflict here....If the spaceship is going to be a huge one holding tens of thousands of people they all will not want to eat or drink excrement....That's one of the biggest problems to overcome...And are you looking at the fact that when we defecate we loose nutrients/minerals in the feces/stool...I still don't know how they are going to overcome that....Also you need to find a way to spot "Black holes" Some kind of "hydrogen" element radar or something...I am saying this because where there is a black hole there is going to be a loss of hydrogen or some kind of element, whatever element is the most abundant in the universe....Also create like a telescope that uses hydrogen or a radiotelescope that uses hydrogen or whatever element is the most abundant in the universe built in the spaceship...
Also i was thinking to generate energy in the spaceship: and light in the spaceship i have the following idea: I was watching the History channel and in there they propose some kind of system that will cause the spaceship to blast at a high speed....And i was thinking, what if the spaceship has some kind of braces sticking out at the end of the exhaust pipe of the spaceship propulsion system whether is air or whatever byproduct like having windmills turbine or some kind of turbine at the end of the exhast pipe and the whatever comes out propels the windmill or turbine and thus produce energy and through the backward tentacles or braces the energy is directed toward the front of the spaceship and provides energy/light....I thought about this idea after seen a car with a tire in the back and the rims in the form of a swirl and also by looking at something that is in my toilet that holds the toilet paper...The turbine/windmill will have to be smaller than the spaceship in circumference or perimeter to prevent slowdown and it could have an airodynamic shape and it could be the size of a regular airplane engine while the size of the spaceship will be huge/vast, but you have to understand there is no air in space but there is some kind star wind....And if whatever comes out out of the exhaust pipes of the spaceship is heat, i was thinking of a rotating solar panels [kind of like the flipping pages of a book] placed at a exact/correct far distance from the spaceship....

Something else that can provide light in the spaceship is resistance to two same magnets...So if  you place two powerful magnets of same symbol/likeness they will try and repel each other so if you can create something that provides resistance against that repelance to those two magnets you have electricity or energy or so i think....Remember in a magnet opposite attracts and same repel...And this is cheaper energy....But i wonder if what magnets do is because of the gravity of earth....But the problem is that magnet are not strong enough or big enough and they are kind of heavy....