Messier 51 (M51) is perhaps better known by its nickname, the Whirlpool Galaxy, because its face-on orientation to us highlights its winding spiral arms. This gives our telescopes a different perspective on a spiral galaxy similar to our Milky Way, whose structure we cannot observe directly since we’re inside it. The sonification tracks along a line emanating from the galaxy's core to the edge of the image and scanning clockwise. The light encountered by this line has been mapped to the notes of a melodic minor scale. The sequence represents infrared data from NASA’s Spitzer Space Telescope. 

At this wavelength, the spiral arms are prominent, so the pitch creeps upward as the spiral extends farther from the core. The bright core, which harbors a supermassive black hole, produces a constant low hum punctuated by short sounds from compact bright sources within the galaxy. 

Credit: IR: NASA/JPL-Caltech/ Univ. of AZ/R. Kennicutt; Sonification: NASA/CXC/SAO/Kimberly Arcand, SYSTEM Sounds (Matt Russo, Andrew Santaguida)

M51 Infrared Sonification

Messier 51 (M51) is perhaps better known by its nickname, the Whirlpool Galaxy, because its face-on orientation to us highlights its winding spiral arms. This gives our telescopes a different perspective on a spiral galaxy similar to our Milky Way, whose structure we cannot observe directly since we’re inside it. The sonification tracks along a line emanating from the galaxy's core to the edge of the image and scanning clockwise. The light encountered by this line has been mapped to the notes of a melodic minor scale. The sequence represents ultraviolet data from NASA’s Galaxy Evolution Explorer. 

The bright core, which harbors a supermassive black hole, produces a constant low hum punctuated by short sounds from compact bright sources within the galaxy. 

Credit: UV: NASA/JPL-Caltech; Sonification: NASA/CXC/SAO/Kimberly Arcand, SYSTEM Sounds (Matt Russo, Andrew Santaguida)

M51 Ultraviolet Sonification

In Stephan’s Quintet, four galaxies move around each other, held together by gravity, while a fifth galaxy sits in the frame but is actually at a much different distance. A visual image of Stephan’s Quintet contains infrared light from the James Webb Space Telescope (red, orange, yellow, green, and blue) with additional data from the Spitzer Space Telescope (red, green, and blue) and X-ray light from Chandra (light blue). A sonification of these data begins at the top and scans the image downward. As the cursor moves, the pitch changes in relationship to the brightness in different ways. The background galaxies and foreground stars in the visual images Webb detects are mapped to different notes on a synthetic glass marimba. Meanwhile, stars with diffraction spikes are played as crash cymbals. The galaxies of Stephan’s Quintet themselves are heard as smoothly changing frequencies as the scan passes over them. The X-rays from Chandra, which reveal a shock wave that has superheated gas to tens of millions of degrees, are represented by a synthetic string sound

Stephan's Quintet Sonification

This image shows the region around the Milky Way's central supermassive black hole, known as Sagittarius A* (Sgr A*), in infrared (orange and purple) and X-ray light (blue). The image is scanned from left to right and the data are transformed into sound. The brightness of the objects is represented by the volume, while the vertical positions of the sources in the image are mapped to musical pitches. X-rays are played with a soft synthesizer and the infrared data are heard as bass notes and plucked sounds. The brightest region in the middle of the image (and hence the loudest) is where Sgr A* the black hole, resides. It is within this area that the Event Horizon Telescope was able to peer to obtain the first image of Sgr A* itself.

Sagittarius A* Sonification

https://rimetrails.bandcamp.com/album/recollections

Recollections

Something Remembered

From a series of (almost) daily ocean glimpses. The music is composed to a video of the sea (photons captured fresh every day). You can experience the full video version here: https://youtu.be/oo1KgPaZa_8

Glimpse 1297 (Apr 20 2025)

upside down carrots (3G19)

La siesta del cipre's

Nos alejamos de la casa, sobre la nieve joven

One year and three trips around the Sun later, NASA's Parker Solar Probe heard some weird, sci-fi sounds from plasma within the solar wind -- and those sounds may answer unanswered questions about how the wind forms.

Parker Solar Probe - Whistler Mode Waves 2

Parker Solar Probe - Whistler Mode Waves 1

Parker Solar Probe - Langmuir Waves

Hello, we’re NASA. You may have seen our astronauts, rocket launches, or Mars rovers — but have you heard our sounds? From interviews with astronauts and engineers to stories that take you on a tour of the galaxy, NASA’s audio offerings let you experience the thrill of space exploration without ever leaving Earth.