January 15, 2008
No Longer Undiscovered Country
NASA MESSENGER's First Look at Mercury's Previously Unseen Side
"When Mariner 10 flew past Mercury three times in 1974 and 1975, the same hemisphere was in sunlight during each encounter. As a consequence, Mariner 10 was able to image less than half the planet. Planetary scientists have wondered for more than 30 years about what spacecraft images might reveal about the hemisphere of Mercury that Mariner 10 never viewed."
Posted by kcowing at January 15, 2008 8:21 PM
