Stars
and
the
material
between
them
are
almost
always
found
in
gigantic
____________________
systems
called
galaxies
.
Our
____________________
galaxy
,
the
Milky
Way
System
;
happens
to
be
one
of
the
two
largest
systems
in
the
Local
Group
of
two
dozen
or
so
galaxies_
The
other
is
the
Andromeda
galaxy
;
it
____________________
more
than
one
hundred
thousand
light
-
years
from
one
end
to
the
other
,
and
it
is
____________________
about
two
million
light
-
years
distant
from
us
.
