Unit One
astronomer : [n] \ n m <r>\ [c] a
person who studies or is an expert in astronomy .
astronomical : adj \aestr n mikl\ 1. connected with astronomy . 2. very large, often too large
{describing a price, number, amount, etc
}: astronomical house prices
astronomy : [n] \ str n mi \ [u] the scientific study of
the sun , moon , stars , etc : Look at astrology .
center : [n] \ sent [r]\ the middle
point . {us}= center
.
century : [n] \ sent ri \ a particular period of 100 years that is used for giving dates
:the 20th century [the period between the years 1901 and 2000 ] .
discover : [v] \di sk v <r>\
[t] 1. to find or learn sth that
nobody know or had found before : Who discovered Australia? . scientists are
hoping to discover
invent : [v] \in vent \ [t] 1. to
think of or make sth for the first time : laszio biro invented the ball point
pen . when was the camera invented ? 2 .
to make up a story , excuse , etc that is not true : he had invented the whole story .
naked eye : [n] the eye without the
help of a microscope of telescope : bacteria are too small to be seen
with the naked eye
recently : adv 1 . a short time ago : I don t know
her very well , I only met her recently . She worked here until quite recently
. 2 . during a period between not long ago and now : Have you seen Paul
recently ? . She is been feeling ill recently .
solar system : [n] the sun and the planets
that move around it .
telescope: [n] \ telisk p\ an instrument in the shape of a tube
with special glass inside it . You look through it to make distant thing appear
bigger and nearer look at stars through a telescope
Prepared by:
Ghaith El Kaeyda
Isah Abu Ali
Ahmed Abu Es layeh