the time machine

if the space-time curvature is true, it seems time travel is theoretically possible. in the late 19th century, one man thought time travel would be possible, at least in a story he wrote. he penned the time machine, which, to this day seems so incredible. that someone sitting in dreary London, possiblly writing long-hand could devise such a means to meet one of many possible futures. or pasts. since space bends everything, including light, due to the force of gravity, it should be theoretically possible to reach where you started from if you travel much faster than light (now impossible). which means, you will alter the journey and when it began. sounds mad? no. think of a giant spherical ball and a point above it. the point is travelling faster than the speed of light. but the light ray on which the point is travelling bends, almost to the shape of the sphere that the giant ball is. the bend, all along its circumference will push light to meet its starting point, won't it? so what happens to the point the ray carried with it. has it begun the journey or ended it? or is it going to change the past by travelling to the future and coming full circle? these and other questions are agitating scientists the world over. if an Einstein among them manages to devise a way to travel faster than light, or punch a hole through the space-time manifold so that a journey along the circumference can be cut through the diameter, then we can travel faster from place to place, or meet ourselves before we started.