A while ago, NASA found evidence of the existence of a ninth planet (remember Pluto was demoted), known for now as Planet 9 (from Outer Space, heh).
They’ve even got a website where they ask amateurs to help them find out more about it. It’s called Backyard Worlds: Planet 9 and it lets anyone participate in the search for the not-yet-discovered planet.
But recently, scientists have also discovered an 8th continent: 94% of it is under water but Zealandia’s land mass comprises all the four attributes needed to be considered a continent. It would become the smallest continent of them all.