We can infer that he can communicate scientific issues “at its nearest distance only 35,00,00 of miles sunward of them” . He is an intelligent person and has done some research into the topic “And looking across the space with instruments and intelligences that we have scarcely dreamed of...” He is a detached and unemotional person who mostly focuses on the facts.
The narrator may also be described as well-educated for he uses long fancy words “with a cloudy atmosphere eloquent of fertility” and complex descriptions “..with glimpses through..navy-crowded seas”.