a coined expression from the words
theta and -sphere (any of the atmospheric layers surrounding a planet or
star). Used figuratively in this lecture. See also
theta in this glossary. And we're about to take off into the thetasphere.
-Levels of Skill (6 July 1957) a coined expression from the words
theta and -sphere (any of the atmospheric layers surrounding a planet or
star). Used figuratively in this lecture. See also
theta in this glossary.