I don't really get how this time travel thing works.
I saw a documentary on national geographic about a man trying to invent a time machine, it use EXTREMELY powerful lasers which are as hot as the surface of the sun or somtin like that in a tunnel form to bend the space time.
Some people say well if it's possible to create a time machine then why aren't people from the future visiting us. I think it's because the future doesn't exist only the past and present.
So could someone please explain to me how time travel works
and
how the future exists? when talking in physics
I saw a documentary on national geographic about a man trying to invent a time machine, it use EXTREMELY powerful lasers which are as hot as the surface of the sun or somtin like that in a tunnel form to bend the space time.
Some people say well if it's possible to create a time machine then why aren't people from the future visiting us. I think it's because the future doesn't exist only the past and present.
So could someone please explain to me how time travel works
and
how the future exists? when talking in physics