Translation:A flying saucer visited us today.
Dude, I was sitting here going "A flying plate...huh? OH!" for an embarrassing amount of time. ;)
Don't worry I'm worse... I did the same, then decided to go with "plate", it accepted and then I saw the suggested solution and thought "saucer" was referring to a kitchen utensil or something and I was still puzzled. Just when I looked for images of "flying sauces" I realized what it was lol
I was at first thinking of "fluent plate" (flytende tallerken), guessing if it was perhaps an idiomatic way of saying "talking plate".
In Spanish we say "platillo volador". "Platillo" usually means a dish/stew/prepared food, but in this restricted case the meaning is closer to "plato/plate/tallerken".