Idk, but it really sounds like something that could be possible in a future. Sending matter sounds difficult since the mass problem but electric information has barely any mass (or it does not?) Something really difficult would be calculating the possition of earth in the universe in the past and sending a signal to a receptor in the past earth
Me, tbh I don’t like meta but the groups in facebooks is probably what keeps me there, for example there is a group about an anime and the guys there literally translate the new volumes of the novel months faster than other piracy sites, almost in the moment, there is also the memes and other posts that only appear around those groups. Not even reddit has that content, so what keeps me attached to facebook is mainly anime groups