Free Astronomy Magazine July-August 2019

9 ASTRONAUTICS arched split in the basin in front of the Montes Apenninus, and then exploits a system of radial and peripheral fractures to head north for about 110 km, paral- lel to the seacoast. At the base of Mount Hadley Delta (a peak south of Mount Hadley) the rille touches Palus Putredinis before finally A POLLO 15 − An astronaut at work near Hadley Rille. Bot- tom right, scenes of ‘lunar life’ during the Apollo 15 mission. [NASA, Project Apollo Archive]