12 to the Moon (1960)

An international team embarks on an expedition to claim the moon, but they encounter aliens there who instruct them to leave.

Ken Clark as Capt. John Anderson
Michi Kobi as Dr. Hideko Murata
Tom Conway as Dr. Feodor Orloff
Anthony Dexter as Dr. Luis Vargas
John Wengraf as Dr. Erich Heinrich
Robert Montgomery Jr. as Roddy Murdock
Phillip Baird as Dr. William Rochester
Richard Weber as Dr. David Ruskin
Muzaffer Tema Bey as Dr. Selim Hamid
Roger Til as Dr. Etienne Martel
Cory Devlin as Dr. Asmara Markonen
Anna-Lisa as Dr. Sigrid Bomark
Francis X. Bushman as Secretary General of the International Space Order