In the early 17th century, the Czech astronomer Anton Maria Schyrleus of Rheita mused that "if Jupiter has (...) inhabitants (...) they must be larger and more beautiful than the inhabitants of Earth, in proportion to the of the two spheres".
17. sajandi alguses arutles tšehhi astronoom Antonín Maria Sírek: "Kui Jupiteril on elanikke, peavad nad olema suuremad ja ilusamad kui maalased, proportsionaalselt nende kahe kera suurusega."