miriscient (adjective)
mi·RI·see·ent, /mɪ'ɹɪsiːɛnt/

A person who is curious and permanently in wonder of what they discover in the world about them.

One of the most miriscient people I know must be Sir David Attenborough.

Roots: Mirus (latin): marvelous, wonderful, amazing; Sméyros (proto-indo-european): laughing/smiling; Scio/Scient (latin): to know, to be aware