Aurora Seven (officially Mercury-Atlas 7, or MA-7) was the second American spaceship to orbit the earth, and was piloted by Scott Carpenter.
This is a song of four halves, Brian:
(i) Scott’s fireflies (discovery)
(ii) “I can see individual fields” (drifting)
(iii) “Real tight on fuel, Gus” (re-entry)
(iv) A little black fish, as friendly as can be (floating)
The mission communications excerpts used are courtesy of NASA. The full transcript of the flight can be found at:
www.jsc.nasa.gov/history/mission_trans/MA07_TEC.PDF
Lyrics are for part (iv).