The name given to the families who crewed Earth's slow interstellar freighters in the twenty-second century, spending years between ports and raising children like Travis Mayweather in space.
Space boomers are the people who live and work aboard the vessels of the Earth Cargo Service. Because the older freighters travel at less than warp two, a single run can take years, and whole families are born, schooled and grow old on board.
Star Trek: Enterprise explores the culture through its helmsman Travis Mayweather, who was born on the ECS Horizon. In Fortunate, Enterprise aids a freighter attacked by Nausicaan pirates and finds its crew fiercely independent and distrustful of Starfleet interference.
In Horizon, Mayweather goes home after his father's death and finds his brother Paul struggling as the new captain. Boomers fear that faster ships like Enterprise will end their way of life, a worry several characters voice.