2 Complete the words for each definition.
1 the word for 1,000,000 m
2 someone who studies the stars
a
3 an icy rock travelling through space with
a 'tail' of gas c
4 ours has eight planets in its
S
5 the measurement of how wide something is
W
6 something you use to look at the stars
t
7 the measurement of how high something is
h__
8 the Earth is one of these
р
- 14