kemey ke selam do Anne asmelash gebremariam gebrezabher Ewe Anne Eye GIS remot sense data science  centre

The core of our Milky Way galaxy is densely packed with gas, dust, stars, and stellar remnants, but its centerpiece is a monster black hole with a mass of 4 million Suns called Sagittarius A* (pronounced “A-star”).

This sonification tracks an image of the galactic center captured by NASA’s Chandra X-ray Observatory, Hubble Space Telescope, and Spitzer Space Telescope in X-ray, optical, and infrared light, respectively. A different instrument represents each observatory, with a xylophone for Chandra, a violin for Hubble and a soft piano for Spitzer. The translation begins on the left side of the image and moves to the right, with sounds representing the positions and brightness of the sources. The light of objects located toward the top of the image have higher pitch, while the intensity of the light controls the volume. Stars and compact sources emerge as individual notes, while extended clouds of gas and dust produce an evolving drone. A crescendo happens in the brightest region of the image, where the supermassive black hole resides. The Hubble image outlines energetic regions where stars are being born, while Spitzer’s infrared data show glowing clouds of dust containing complex structures. X-rays from Chandra reveal gas heated to millions of degrees from stellar explosions and outflows from Sagittarius A*. 

Credit: X-ray: NASA/CXC/SAO; Optical: NASA/STScI; IR: Spitzer NASA/JPL-Caltech; Sonification: NASA/CXC/SAO/Kimberly Arcand, SYSTEM Sounds (Matt Russo, Andrew Santaguida)

Galactic Center Sonification

Voyager: Lightning on Jupiter

These melodious tones are created at a special frequency in a plasma with a magnetic field. The frequency is set by the number of electrons in a given volume (the electron density) and the strength of the magnetic field. Hence, the frequency of these waves, called upper hybrid waves, can provide a very accurate measure of the density of the plasma; a fundamental property of the Jovian environment of interest to scientists. These emissions were acquired by Voyager 2 as it passed through the outer magnetosphere in 1979.

Voyager Plasma Sounds

Space becomes “sonified” in this visualization of a cluster of galaxies imaged by NASA's Hubble Space Telescope. Time flows left to right, and the frequency of sound changes from bottom to top, ranging from 30 to 1,000 hertz. Objects near the bottom of the image produce lower notes, while those near the top produce higher ones. Most of the visible specks are galaxies housing countless stars. A few individual stars shine brightly in the foreground. Stars and compact galaxies create short, clear tones, while sprawling spiral galaxies emit longer notes that change pitch. The higher density of galaxies near the center of the image — the heart of this galaxy cluster, known as RXC J0142.9+4438 — results in a swell of mid-range tones halfway through the video. Hubble's Advanced Camera for Surveys and Wide Field Camera 3 acquired this image on Aug. 13, 2018. Video: https://svs.gsfc.nasa.gov/13061

Credit: NASA/Hubble/SYSTEM Sounds (Matt Russo/Andrew Santaguida)

Sonification of a Hubble Deep Space Image

This audio illustrates a seismic event detected by NASA's InSight spacecraft on April 6, 2019, the 128th Martian day, or sol, of the mission. Three distinct kinds of sounds can be heard, all of them detected as ground vibrations by the spacecraft's seismometer, called the Seismic Experiment for Interior Structure (SEIS): There's noise from Martian wind; the seismic event itself; and the spacecraft's robotic arm as it moves to take pictures. News release: https://go.nasa.gov/2VmCkdS
 
This event is the first likely marsquake recorded by the InSight team. Several other seismic events have been recorded but are much more ambiguous than this signal.
 
The audio underscores just how seismically noisy the Martian surface can be and was produced from two sets of sensors included with SEIS. You can hear sounds from the Very Broad Band sensors from your left speakers and sounds from the Short Period sensors from your right speakers. Audio from both sets of sensors have been sped up by a factor of 60; the actual vibrations on Mars would not have been audible to the human ear. Playback on headphones or speaker system recommended for best experience.

First Likely Marsquake Heard by NASA's InSight

By Lee Rosevere

The musicians for NASA Explorers: Apollo took inspiration from science fiction, Apollo audio from the NASA archives and the excitement surrounding NASA’s upcoming human exploration of the Moon with the Artemis program. You can listen to the NASA Explorers: Apollo audio series here:

Apollo 11

Lunar Descent - From the soundtrack to “NASA Explorers: Apollo”

For All People - From the soundtrack to “NASA Explorers: Apollo”

Reaching Out - From the soundtrack to “NASA Explorers: Apollo”

By Daniel Wytanis

The musicians for NASA Explorers: Apollo took inspiration from science fiction, Apollo audio from the NASA archives and the excitement surrounding NASA’s upcoming human exploration of the Moon with the Artemis program.

EOSDIS - From the soundtrack to “NASA Explorers: Apollo”

Decompress - From the soundtrack to “NASA Explorers: Apollo”

Brahe - From the soundtrack to “NASA Explorers: Apollo”

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.

Lunar Descent - From the soundtrack to “NASA Explorers: Apollo”

NASA

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