Time-travel

Time travel is the concept of movement (such as by a human) between certain points in time, analogous  to movement between different points in space. Hank Russo and Douglas Davenport are the most famous time-machine inventors, but there have been several others. The formula for time-travel is as follows: a weird hair-gel, blue energy beam, and the legendary time rock, the combination of which makes tachyon particles. Douglas actually put his Tachyon Capacitor in a time machine, which worked. Davenport Industries has made several time machines since. Time-travel is also available as a bionic ability for people such as Maya Matthews, and a superpower for people such as Shelby Eisenberg.