Yes, of course. A few master meditator Buddhist monks have done it their way. I go to an alternative universe from time to time involuntarily.
Time is always there; it is only our thinking it is impossible that stops us.
Nopes not now . .. but travel to Romania is possible which let you feel the days of medival time !! Have a look at the Romania's top tourist attractions !!
http://www.listofwonders.com/top-tourist...
Safety not gaurenteed is a documentary on the legitimacy of time travel
impossible