166
Have
you
ever
tried
to
count
the
stars?
On
dark
nights
you
can
see
hundreds.
There
are
millions
more
you
can't
see,
though,
because
they're
so
faint
they
can
only
be
found
using
a
telescope.
Stars
look
tiny
from
the
Earth,
but
if
you
could
see
one
close
up,
you
would
see
a
huge
burning
ball
of
glowing
gas,
like
our
Sun.
The
Sun
is
the
nearest
star
to
the
Earth,
at
a
distance
of
approximately
150
million
kilometres.
Temperatures
at
the
centre
of
the
Sun
are
about
15
million
°C.
The
Sun
is
extremely
bright.
You
should
never
look
directly
at
it
because
its
light
is
so
strong
it
would
damage
your
eyes,
even
on
hazy
days.
Compared
to
other
stars,
though,
the
Sun
is
not
particularly
hot
or
bright.
And
although
a
million
Earths
could
fit
inside
the
Sun,
it
is
much
smaller
than
many
stars.
Some
stars
are
so
big,
in
fact,
that
a
million
stars
like
our
Sun
could
fit
inside
them.
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16
"millions",18
"telescope.",35
"tiny",38
"Earth,",41
"huge",54
"gas,",59
"star",68
"150",77
"million",78
"centre",83
"15",89
"never",99
"damage",112
"Earths",136
"smaller",145
"stars",159
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