The EM Machine has the qualities of a full rocket. Therefore the EM is renamed again, to denote its rocket abilities. The EM Rocket is the new name.
https://space1usa.blogspot.com/2019/02/space1-em-name.html
(Previously) Space1 has released additional names for the EM today, from Elevation Machine to Electromagnetic Radiation Machine and Electrodynamic Machine, due to the nature of its space flight functioning faster than a speeding bullet to that of an electromagnetic radiation bullet. The abbreviated acronym EM remains unchanged as the names remain interchangeable.
