L55. From the earth: greetings

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

* astronomy [ə'strɑnəmi]

* astronomical [,æstrə'nɑmɪkl]

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