If your local Public Radio station has been extorting the listeners of NPR and Prairie Home Companion for sufficient donations, then you might be able to sample "ambient" music on a broad front.
Hearts Of Space and similar programing has been - out there - in the FM radio ether for decades.
A well heeled PBS station, in a region with multiple public stations, will include several
space music shows, a Grateful Dead Hour, and hours of Blue Grass on the weekends.