Big Picture Science – To Earth and Back: Catharine Conley part 2

by Gary Niederhoff on May 21, 2012


Part 6 of To Earth and Back, featuring Catharine Conley, NASA planetary protection officer, on how difficult it is to keep extraterrestrial microbes from reaching the Earth.
(TRT 4:32)

Leave a Comment

This blog is kept spam free by WP-SpamFree.

Previous post:

Next post: