[0:23:13 - 0:23:18] Ken Farley leads the science team that will direct Perseverance through the Jezero Crater.
[0:24:16 - 0:24:21] has already spotted a large number of boulders that
Ken Farley says he didn't expect to see
[0:26:01 - 0:26:07] In about ten years,
Ken Farley says, scientists examining those samples may be confronted