Wernher von Braun's encrypted Alien message

Did von Braun admit that he got his space technology from Aliens?


"We find ourselves faced by powers which are far stronger than we
had hitherto assumed and whose base is at present unknown to us. More I cannot say at present. We
are now engaged in entering into closer contact with those powers. And in 6-or-9 months time, it
may be possible to speak with some precision on the matter."