迷不知返

迷 = 米 + 辶 : As Marilyn Monroe (mi) is unsuspectingly walking just inside the space station's entrance (Ø2) she is hit by a falling sack of rice (米) so hard that she is knocked out of her gladiator sandals (辶). After she wakes up from a short coma (迷) she wonders where the sack of rice found so much gravity.

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

知 = 口 + 矢 : Mnemonic symbol: Francis Bacon is attributed to have stated "scientia potentia est", "knowledge is power". I'll thus represent 知 by Francis Bacon. Francis Bacon (知) and James II of England (zh) are playing darts (矢) in front of the space station (Ø1). Because they lack a dart board they just use a mandarin (口).

返 = 反 + 辶 : The protester (反) just entered the anthill (an3) wearing socks and gladiator sandals (辶). Frankenstein's Monster (f) protests loudly and tells the protester to go back (返) where he came from to either wear sandals and no socks, or socks and proper shoes.