Not right now, it is possible but it will create a time paradox, a portal between dimensions, besides it's not a good idea.
No, the only way to travel through time is by living your life through the time you are given. It's not possible to travel back to the past or skip forward to a future that hasn't happened yet.
No one & I mean no one has come up with a theory on how that is possible. Until then, time travel is a sci-fi geeks distant dream.
No. Once someone is dead they are dead forever. You can't bring their soul back in their body. It's pretty commen sense
no
