Words
____________________
-
a
person
who
travels
in
a
spacecraft
into
our
space
.
____________________
-
a
large
round
object
that
circles
the
Earth
and
shines
at
night
.
____________________
-
To
follow
a
curved
path
around
something
else
.
____________________
-
A
large
,
round
object
in
space
(
Earth
)
that
travels
around
a
star
(
Sun
)
____________________
system
-
A
star
and
the
planets
that
move
around
it
.
____________________
-
objects
in
space
made
of
burning
gas
The
Sun
is
a
yellow
____________________
star
.
It
looks
like
a
very
hot
ball
of
burning
gases
.
Did
you
know
that
the
Sun
is
4
.
5
billion
years
old
?
The
Sun
creates
the
weather
,
climate
and
seasons
on
Earth
.
The
Sun
is
____________________
to
us
on
Earth
,
but
there
are
billions
of
other
stars
like
our
Sun
in
the
Milky
Way
galaxy
.
Planets
People
live
on
Earth
.
Earth
is
the
____________________
planet
from
the
Sun
.
It
is
also
the
fifth
largest
planet
in
the
solar
system
.
As
far
as
we
know
,
Earth
is
the
only
planet
in
our
solar
system
that
has
living
things
.
____________________
is
the
smallest
planet
in
our
solar
system
.
It
is
also
the
planet
that
is
closest
to
the
Sun
.
Mercury
is
only
a
little
bigger
than
Earth's
Moon
.
____________________
is
the
second
planet
from
the
Sun
.
It's
the
closest
planet
to
Earth
!
Venus
may
look
like
it
is
the
same
size
and
shape
as
Earth
,
but
it
is
very
different
.
Venus
spins
very
slowly
____________________
is
the
fourth
planet
from
the
Sun
.
It's
a
very
dusty
and
cold
planet
.
Mars
is
sometimes
called
the
____________________
Planet
.
Scientists
want
to
know
if
Mars
may
have
had
living
things
in
the
past
.
The
largest
planet
in
our
solar
system
is
Jupiter
!
____________________
is
also
made
of
gas
.
Jupiter
is
surrounded
by
more
than
65
known
moons
!
Saturn
is
the
sixth
planet
from
the
Sun
.
____________________
is
known
for
its
beautiful
rings
.
Saturn's
rings
are
made
of
chunks
of
ice
and
rock
.
Similar
to
Jupiter
,
Saturn
is
mostly
made
of
gas
.
Uranus
is
an
____________________
planet
.
It
has
faint
rings
that
are
narrow
and
dark
.
Uranus
is
partly
made
of
water
and
has
a
small
rocky
center
.
Neptune
is
more
than
thirty
times
as
far
from
the
Sun
as
Earth
is
.
____________________
has
six
rings
,
but
they
are
very
hard
to
see
.
This
planet
is
dark
,
cold
,
and
____________________
.
Pluto
might
not
be
part
of
the
____________________
major
planets
in
our
solar
system
Pluto
is
a
dwarf
planet
and
has
five
known
moons
.
Pluto
has
mountains
,
valleys
,
plains
,
and
craters
.
The
Moon
Earth's
Moon
is
the
fifth
largest
moon
in
the
solar
system
.
The
____________________
is
the
brightest
and
largest
object
you
see
in
the
sky
at
night
.
It's
also
the
only
place
beyond
Earth
where
people
have
set
foot
.
Astronauts
have
brought
back
a
total
of
842
pounds
of
____________________
rocks
and
soil
to
Earth
to
study
?
