While English has emerged as a global lingua franca, there are also efforts to preserve linguistic diversity and revitalize endangered languages through digital technologies.
Any intelligent organism would at the very least need the ability to locate the position of objects in space. So the ideal interstellar lingua franca would be haptic.
That is, how did English gain the present status of popularity? There are in fact a number of interlocking reasons for the popularity of English as a lingua franca.