Time Travel

Time travel is the act of moving through time either backward or forward. The most common way of achieving this is with a time machine that can move you in either direction you want to go.

Back in time
Backward time travel is one of the options for time traveling. It allows time travelers to see any point in time before the present. Most occurrences of BTT allow the travelers to interact with things which may alter the future in unpredictable ways.

Someone might want to go back in time to shape reality in the way they want it, to relive a long-gone moment that formerly only existed in their memory, or to stop someone else from doing something wrong.

Forward in time
Forward time travel is the other direction a time traveler can send themselves. It's where they can view the future, events that didn't happen yet. Unlike with backward time travel, the traveler cannot alter the passage of time.