Stars
can
be
identified
by
the
____________________
in
which
they
are
found
.
A
smaller
pattern
of
stars
within
this
region
is
called
a
(
n
)
____________________
.
The
stars
appear
not
to
move
relative
to
each
other
because
their
____________________
____________________
is
very
small
.
The
cycle
of
eclipses
that
repeats
approximately
every
18
years
is
called
the
____________________
____________________
.
