Have you ever seen a fireball in the sky?
早朝の空に “火の玉” 「火球に間違いない」専門家 | NHKニュース
西日本の上空に「火の玉」で騒然 「火球に間違いない」と専門家 - ライブドアニュース
Do you think UFOs exist somewhere?
Have you ever seen a UFO?
What would you do if a UFO landed in your garden?
Do you think the US government hides UFO information?