1
.
The
distance
light
travels
in
one
year
is
a
____________________
____________________
.
2
.
A
point
in
space
that
has
such
a
strong
force
of
gravity
that
nothing
within
a
certain
distance
of
it
can
escape
is
known
as
a
____________________
____________________
.
3
.
Stars
form
in
a
cloud
called
a
____________________
.
4
.
A
group
of
stars
that
forms
a
pattern
is
called
a
____________________
.
5
.
A
gigantic
explosion
that
occurs
near
the
end
of
the
life
of
some
stars
is
a
____________________
.
6
.
A
huge
system
of
stars
,
dust
,
and
gas
held
together
by
gravity
is
a
____________________
.
7
.
Some
of
the
constellations
got
their
names
from
ancient
____________________
characters
or
animals
.
8
.
There
are
____________________
constellations
.
9
.
The
Big
Dipper
is
in
the
____________________
____________________
constellation
.
10
.
Dark
spots
moving
along
the
face
of
the
sun
is
known
as
____________________
.
11
.
As
Earth
____________________
the
sun
,
we
view
different
parts
of
the
universe
with
its
different
constellations
.
12
.
____________________
is
considered
fuel
for
the
stars
.
13
.
A
____________________
dwarf
star
is
one
that
has
no
fuel
to
make
its
own
energy
.
14
.
The
____________________
is
the
closest
star
to
Earth
.
15
.
The
Milky
Way
is
a
____________________
shape
.
16
.
The
____________________
____________________
is
the
name
of
our
galaxy
.
17
.
Most
galaxies
that
scientists
have
observed
are
____________________
in
shape
.
18
.
The
three
layers
of
the
sun's
atmosphere
from
inner
to
outer
are
____________________
,
____________________
,
and
____________________
.
