PREVIEW NEW WEEK: Excerpt from conversation with astronomer Dr. Ken Croswell from the Proceedings of the National Academy of Sciences on the preliminary observations of the NASA InSight probe to study marsquakes -- the good and bad news. More detail in t

PREVIEW NEW WEEK: Excerpt from conversation with astronomer Dr. Ken Croswell from the Proceedings of the National Academy of Sciences on the preliminary observations of the NASA InSight probe to study marsquakes -- the good and bad news.  More detail in the new week.

1999 Mars Pathfinder