阅读设置
20
18
第164节（第8151-8200行） (164/3207)
object
are
those
of
the
voyager
1
and2
spacecraft,which
are
now
flying
away
from
us
at
about
thirty-five
thousand
miles
an
hour.
the
reason
the
voyager
craft
were
launched
when
they
were
(in
august
and
september1977)
was
that
jupiter,
saturn,
uranus,
and
neptune
were
aligned
in
a
way
that
happens