Craters
Helberg
Origin of the name
Robert J.; American aeronautical engineer (1906-1967).
When to observe it
On the far side: it never faces the Earth. Only spacecraft have seen it.
Khonsu EN/FR Français Khonsu EN/FR FrançaisCraters
Robert J.; American aeronautical engineer (1906-1967).
On the far side: it never faces the Earth. Only spacecraft have seen it.