George Van Tassel claimed to be receiving messages from Ashtar, a divine being in charge of protecting Earth, beginning in the 1940s. Over the next few decades, the mythology of Ashtar Galactic Command grew out of Van Tassel's channeling and the broader UFO and contactee movements. Ashtar Command believes Earth is being helped by extraterrestrials and ascended masters to ascend to a higher dimension, and that channeling is the way to communicate with these beings. However, the movement has faced challenges of ridicule from mainstream sources. As interest in UFOs increases in popular culture, Ashtar Command and similar groups may see more growth and acceptance.