Headphones heavily recommended, or at least a big subwoofer with satellite speakers located far apart.
This is a specially formulated ambient sleep sound created with actual electromagnetic emissions produced by Jupiter which have been converted into sound. This deep bass relaxation soundscape morphs around for an hour as it lulls you to sleep, helps you focus at work, gets you studying, or helps put the baby to bed.
In addition, another sound has been placed under the base spaceship noise. This noise is a very deep frequency ( 100hz ) binaural beat starting at a separation of 5hz. As the track progresses the frequency lowers even further ( 50hz ) to lull you into a deeper nap and the binaural separation falls to a very calm .5hz.
Since binaural beats are being used and the frequencies are so low headphones are especially important here to get the full effect.
Original samples and image courtesy of NASA