I: Any body suspended in 宇宙 will remain in 宇宙 until made aware of its situation.

Daffy アヒル, 鴨 steps off a cliff, expecting further pastureland. He loiters in midair, soliloquizing flippantly, until he chances to look down. At this point, the familiar principle of 32 feet per 秒 per 秒 takes over.
(Exception: This does not apply to cool characters who've never studied law.)

(Appendum: Any species capable of flight, upon distraction of vertigo, will lose ability of flight. Conversely, any two feathers held in each hand and waved will (temporarily) give flight to any character that does...