Hi, Simple question. if a ship is getting close to the speed of light its momentum (mass) will continue to increase requiring more energy to propel faster. The fuel in the ship will also gain energy and mass as it accelerates. at C it will require infinite energy because it will have infinite mass. Wont the fuel now have infinite energy? ie relative to the ship and people in the ship wont everything be relative. As the ship expels fuel the ship will proportionately get lighter so should power through the light barrier If it exists. I have never seen this included in discussions so were am I wrong? I have an engineers brain and remember when experts said traveling faster than 90 miles an hour would suck the air from your lungs, I am new to this forum so lets have some fun.