Which has already happened. Clinton basically announced the discovery of life on mars back in the 90s.

https://www.youtube.com/watch?v=pHhZQWAtWyQ

Related fun-fact:

This real announcement (with some edited visuals to make it look like he was delivering it inside the White House press room) was used in the movie Contact to seem related to the more extraordinary discovery of alien intelligence that was portrayed in that movie.

https://www.youtube.com/watch?v=obrBARvWtiA

The White House objected to this use at the time, but never took any sort of legal action to have it removed or anything AFAIK.

A visionary