This article is from the Space FAQ, by Jon Leech leech@cs.unc.edu and Mark Bradford tla@surly.org with numerous contributions by others.
Investigators associated with NASA missions are allowed exclusive access
for one year after the data is obtained in order to give them an
opportunity to analyze the data and publish results without being
"scooped" by people uninvolved in the mission. However, NASA frequently
releases examples (in non-digital form, e.g. photos) to the public early
in a mission.
 
Continue to: