For quite a while now MO has been treated to missives posted from, it seems, a representative of the galactic government who would like to share knowledge of time travel. For those with enough reputation, a representative recent offering is at https://mathoverflow.net/questions/159619/obama-was-executed-by-our-most-fair-galactic-government-two-years-ago-the-person. These questions are pretty quickly deleted, which is absolutely the correct response. As important as galactic communication and time travel are, MO is not the right forum.
That said, to my eye these posts share a certain poetry, and it would be a shame for them to simply bitrot. Not having my own time box and UFO, I don't know a good way to gather them all together. Is there one?