NASA’s Pioneer 11 space probe, which flew by Jupiter and Saturn in the 1970s, is expected to pass near the star Lambda (λ) Aquilae in about 4 million years.
Some of the sound is probably merely an intensification of the basic Hemi-Sync frequencies, being designed to further modify brainwave frequency and amplitude.
Focus 15: Travel into the Past. All of the preceding techniques are conducted at the level of expanded awareness known as Focus 12.