After looking at the current discovery of Higgs Boson and the next long term plans of NASA and ESA(European Space Agency), I can't stop myself asking about the possibilities in near future.
According to my little knowledge, time travel is possible if we can bend the space-time fabric. The bending or curving of space-time fabric is possible only by black hole or worm hole(Although I don't know the specific difference between these two). Now to think about black hole which is a gravitational sink of the universe which has infinite mass where masses sink and on the other side the black hole there is white hole which is big bang. So this seems the game of gravity.
But to really get any clue any information about gravity of cosmic objects, the so called gravitational waves are the medium. To get all the information about presence of black-hole NASA and ESA are planning for the project LISA which will detect the gravitational waves from distant cosmic objects.
I would happy to know from theoretical physicists that how far the project LISA can help in this direction. If anybody can share their view about this and can throw some light on possibility of time travel, I would be grateful.