Pronunciation: "forskarna upptäckte en ny planet"
Swedish quiz from Lingot store: pronunciation in one sentence is off. Ought to be [plan'e:t] rather than something like [pl'a:net].
You probably know it already but planet can mean "planet" or "the airplane" depending on pronounciation. From your description it sounds like TTS says "the airplane" (of course that does not work grammatically).