Words & expressions
1. orbit, n/v, the curved path in space that is followed by an object going around and around a planet, moon, or star.
--Mars and Earth have orbits which change with time.
--In 1957 the Soviet Union launched the first satellite to orbit the earth.
2. blot, n, If something is a blot on a person's or thing's reputation, it spoils their reputation.
--a blot on the reputation of the architectural profession.
3. realm, you can use realm to refer to any area of activity, interest, or thought.
--in the realm of science fiction
--the realm of politics
Sentences
Whether a planet can support life depends on the size and brightness of its star, that is its 'sun'.
Pronunciation
* astronomical [,æstrə'nɑmɪkl]
