John Glenn's Mercury mission was the first American space flight around the world. #Infographic
Every US space mission from Mercury to Apollo-Soyuz with astronauts color-coded by selection group.
The bright, pinkish-white star at upper left is Orion, known as the 'hunter', is Betelgeuse
This enhanced photo image of Mercury the Messenger probe was taken during a flyby of the planet in 2008.
This week's lunar eclipse as seen from Mercury's Messenger satellite. (gif)
First image ever obtained from Mercury orbit - NASA MESSENGER
"MESSENGER by the Numbers" - and infographic by NASA
Concentric circular orbits with reference points, extrapolated perspective, and triangulation.