(mathematical analysis) Banach space - a normed vector space which is complete, in the sense that Cauchy sequences converge

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

basic living stipend, universal basic income, basic income

space probe

Synonym of 天体物理学 (tentai butsurigaku, “astrophysics”)

an astronaut (member of the crew of a spaceship or other spacecraft, or someone trained for that purpose)

xenobiology (speculative biology of extraterrestrial life)

(astronomy) cosmic background radiation

(engineering) aerospace engineering

general topology