阅读设置
20
18
第153节（第7601-7650行） (153/3207)
the
largest
object
so
far
found
in
a
zone
of
galactic
debris
known
as
the
kuiperbelt.
the
kuiper
belt
was
actually
theorized
by
an
astronomer
named
f.
c.
leonard
in
1930,but
the
name
honors
gerard
kuiper,
a
dutch
native
working
in
america,
who
expanded
theidea.
the
kuiper
belt
is
the