<s>
In	O
cellular	O
automata	O
such	O
as	O
Conway	O
's	O
Game	O
of	O
Life	O
,	O
a	O
reflector	B-General_Concept
is	O
a	O
pattern	O
that	O
can	O
interact	O
with	O
a	O
spaceship	O
to	O
change	O
its	O
direction	O
of	O
motion	O
,	O
without	O
damage	O
to	O
the	O
reflector	B-General_Concept
pattern	O
.	O
</s>
<s>
In	O
Life	O
,	O
many	O
oscillators	O
can	O
reflect	O
the	O
glider	O
;	O
there	O
also	O
exist	O
stable	O
reflectors	B-General_Concept
composed	O
of	O
still	O
life	O
patterns	O
that	O
,	O
when	O
they	O
interact	O
with	O
a	O
glider	O
,	O
reflect	O
the	O
glider	O
and	O
return	O
to	O
their	O
stable	O
state	O
.	O
</s>
