NASA AUDIO CREDITS - Voice of Creation
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Launch countdown (STS-135, July 8, 2011) and space sounds: courtesy of NASA.
NASA audio is generally not subject to copyright in the United States.
Use of NASA material does not imply endorsement by NASA.

This page is an independent, free project. It is not affiliated with, sponsored
by or endorsed by NASA. No NASA logo or insignia is used.

Recordings used (trimmed, filtered and compressed copies are in the nasa/ folder)
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From NASA "Historical Sounds" - https://www.nasa.gov/historical-sounds/

1. "STS-135: Countdown to Launch"
   https://www.nasa.gov/wp-content/uploads/2015/01/590318main_ringtone_135_launch.mp3
   Used: from T-10 s to about 3 s after liftoff; the launch roar is darkened and
   faded out quickly; 60 Hz low cut. -> nasa/sts135-countdown.mp3

2. "Cassini: Saturn Radio Emissions #1"
   https://www.nasa.gov/wp-content/uploads/2015/01/584791main_spookysaturn.mp3
3. "Cassini: Saturn Radio Emissions #2"
   https://www.nasa.gov/wp-content/uploads/2015/01/584795main_saturn_radio_waves.mp3
4. "Cassini: Enceladus Sound"
   https://www.nasa.gov/wp-content/uploads/2015/01/584796main_enceladus.mp3
5. "Voyager: Lightning on Jupiter"
   https://www.nasa.gov/wp-content/uploads/2015/01/603921main_voyager_jupiter_lightning.mp3
6. "Stardust: Passing Comet Tempel 1"
   https://www.nasa.gov/wp-content/uploads/2015/01/598980main_stardust_tempel1.mp3
   Items 2-6 are joined with crossfades into one soft background, 60 Hz-6 kHz.
   -> nasa/space-planets.mp3 ("Planets & space")

From NASA "Sounds of the Sun" (NASA Goddard Space Flight Center, 2018)
https://www.nasa.gov/solar-system/sounds-of-the-sun/

7. "Sun Sonification"
   https://www.nasa.gov/wp-content/uploads/2018/07/sun_sonification.wav
   Data from the ESA/NASA Solar and Heliospheric Observatory (SOHO), Michelson
   Doppler Imager; sonified by A. Kosovichev, Stanford Experimental Physics Lab
   (as credited on the NASA page). Used: a 42 s excerpt, 60 Hz low cut.
   -> nasa/sun.mp3 ("The Sun")
   Also used, looped and filtered (120 Hz to 7 kHz), as the texture and gentle
   pulse of tracks/sun-track-bkd-cw-20min.m4a and its preview ("Sun track for
   BKD and CW", 20 minutes), mixed with a synthesized tone. No voices.

nasa/nasa-audio.js holds the same three files as text so the page can use them
offline without any network access.

Usage guidelines: NASA Images and Media Usage Guidelines,
https://www.nasa.gov/nasa-brand-center/images-and-media/
("NASA content - images, audio, video ... generally are not subject to copyright
in the United States." "NASA should be acknowledged as the source of the
material." Use must not imply endorsement.)

Sources checked on October 25, 2026.