知曉

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).

晓 = 尧 + 日 : At dawn (晓), Marie Curie (xi) and the sun (日) meet Tang Yao (尧) in the aorta (ao3). They let him know (晓) that they have been a couple for a long time and plan to marry, but Tang Yao explains that he already knows (晓).