Fallen Astronaut is a 3. 5-inch (8. 9 cm) aluminium sculpture created by Paul Van Hoeydonck. It is a small stylized figure, meant to depict an astronaut in a spacesuit, intended to commemorate the astronauts and cosmonauts who have died in the advancement of space exploration. It was commissioned and placed on the Moon by the crew of Apollo 15 at Hadley Rille on August 1, 1971 next to a plaque listing the fourteen men known who died.