Science Song of the Week #9: Journey to the sun ... without accompaniment!

Recent SSotW posts have had a general theme of "pushing the limits," including featured songs about medicine (a profession based on science but encompassing much more than that) and in Spanish. This week's featured song explores a different sort of science/music frontier, i.e., the minimalist approach to instrumentation. To my knowledge, only one full-length CD of a cappella science music has ever been made: AstroCappella by The Chromatics. The Chromatics' recording of "The Sun Song" has been paired with some striking footage from orbiting space observatories in the video below.