A chronobet

Write a time travel alphabet, past to present to future, anything and everything that pops into your head about time travel.

Rather than starting with A, you might brainstorm to get the ideas flowing. No need to tie yourself to linear time or linear order of words. :-)

For a real challenge, turn it into a story. Each alphabet line will be another line of the story. (The sentences don't need to begin with the letter, just have a word that starts with the letter somewhere in them.)