 Robert Short (AKA Bill Rose), editor of the 1950s UFO magazine "Interplanetary News Digest", was a member of Van Tassel's group.He began to popularise the messages, but as Van Tassel did not agree that other Ashtar messages were authentic, Short broke away and began his own group called "Ashtar Command".By the mid-1950s, the concept of Ashtar and a galactic law enforcement agency preparing an imminent rescue of humanity had become well-established, and included various well-known, esoteric channelers of the era.