00:00have you ever done something in life that you still regret and wish you could undo
00:12many times sonia but what's the point the past is past we have no choice except to adapt true
00:20but imagine if there was actually a way to correct those mistakes a way to revisit the
00:25past or even jumping to the future are you serious i've heard about time machines in movies but does
00:32science even talk about it yes scientists have been exploring this idea for decades the concept
00:38isn't just fantasy it has roots in einstein's theory of relativity relativity how does that
00:45connect with time travel einstein proved that time is not fixed it stretches and bends with speed and
00:51gravity if you travel close to the speed of light your time slows compared to others when you come
00:58back you'll see the world has moved ahead that means traveling into the future is possible wow so future
01:05travel might be real but what about going back that's where it becomes dangerous changing the
01:10past could break the chain of cause and effect scientists call it causality if you alter history
01:17the present could collapse hmm i get it one small change in the past and the entire timeline could
01:23be destroyed exactly think about the grandfather paradox if someone travels back and kills their
01:29grandfather before their parent is born then how would they even exist to do that that's a total
01:34loop of confusion no wonder scientists doubt backward travel is possible but there's another theory
01:40wormholes they are shortcuts in space and time if one end of a wormhole moves at near light speed
01:47could create a time gap step in one side and you might come out in another time fascinating but
01:54building and stabilizing a wormhole sounds way beyond today's technology true still imagine if time
02:00travel became reality we could learn directly from history prevent disasters and even bring back
02:06knowledge from the future but the risks are huge to change one thing in the past and our present
02:12might vanish if people knew their future society itself could collapse and if such power was misused
02:19it could be catastrophic so maybe it's better that time travel remains only an idea regrets teaches
02:25lessons exactly sonia the real power is in the present that's where we can truly shape our life
02:31jay hind jay hind jay hind jay hind
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