I hate it when people make riddles that have hundreds of possible risposte but only one answer is correct. It's like asking for the factors of 32, but saying only 4 and 8 are correct. Time, hot air baloons, helecopters, a light object in the wind, a kite, an earlier spazio craft (Before the shuttle era.), a hypothetical antigravity device, the big blue note. successivo time, be a bit più specific why don't you?
@Dr I would have to agree with Heitsi I mean my answer was correct as well. Yet the answer was pretty simple. Besides it would help ya know. te can't get too upset o bothered at people who guessed possible answers.