PREVIEW: #MARS: Conversation with colleague Bob Zimmerman re new studies based on modeling that indicate the long voyages to and from Mars are profound health threats without present solutions - in particular, damage by cosmic rays. More later.
Jun 14, 09:47 PM
PREVIEW: #MARS: Conversation with colleague Bob Zimmerman re new studies based on modeling that indicate the long voyages to and from Mars are profound health threats without present solutions - in particular, damage by cosmic rays. More later.
1957
1957