NASA dropped some stellar tunes in honor of a special anniversary.Related video above: Could 2 NASA astronauts be stuck at the space station until next year? Here's what to knowThe National Aeronautics and Space Administration released three clips of what is called "sonification" of three galactic images."Sonification is a process that translates astronomical data into sound, similar to how digital data are more routinely turned into images," according to NASA.These new "space sound" clips were released to celebrate the 25th anniversary of NASA's Chandra X-ray Observatory, the world's most powerful X-ray telescope. Launched in 1999, Chandra has been transmitting photos of our universe down to Earth ever since, expanding the limits of astrophotography.These new clips incorporate photos of three well-known astral phenomena: Cassiopeia A, 30 Doradus (nicknamed the "Tarantula Nebula"), and NGC 6872 (aka the "Condor Galaxy").Chandra was named in honor of the late Nobel laureate Subrahmanyan Chandrasekhar. In 1983, he earned the Nobel Prize in Physics for his work explaining the structure and evolution of stars.Cassiopeia A — located approximately 11,000 light-years from Earth — comprises the remains of a star that exploded around 300 years ago and was also one of the first astral photos ever captured by Chandra.For the sonification, NASA used a recent photo of Cassiopeia A, which is a composite image of several different telescope shots, including the Chandra, James Webb, Hubble, and retired Spitzer space telescopes."The scan starts at the neutron star at the center of the remnant, marked by a triangle sound, and moves outward," NASA wrote, turning the debris from the expanding exploded star into musical notes. "The brighter parts of the image are conveyed through louder volume and higher pitched sounds. X-ray data from Chandra are mapped to modified piano sounds, while infrared data from Webb and Spitzer, which detect warmed dust embedded in the hot gas, have been assigned to various string and brass instruments. Stars that Hubble detects are played with crotales, or small cymbals."The second sonification involves one of the largest and brightest of star regions near our Milky Way: the Tarantula Nebula. Instead of the ring method used with Cassiopeia A, this time the scale moves across the image."As the scan moves from left to right across the image, the volume heard again corresponds to the brightness seen," NASA wrote. "Light toward the top of the image is mapped to higher-pitched notes. X-rays from Chandra, which reveal gas that has been superheated by shock waves generated by the winds from massive stars, are heard as airy synthesizer sounds. Meanwhile, Webb’s infrared data show cooler gas that provides the raw ingredients for future stars."The final sonification concerns a spiral galaxy, with the scale starting at 12 p.m. and running clockwise through the image. The Condor Galaxy in the constellation Pavo is the largest known spiral galaxy — so large that it is drawing a smaller spiral galaxy into its wake. "Chandra’s X-rays, represented in sound by a wind-like sound, show multimillion-degree gas that permeates the galaxies," NASA wrote. "Compact X-ray sources from background galaxies create bird-like chirps. In the Hubble data, the core of NGC 6872 is heard as a dark low drone, and the blue spiral arms (indicating active star formation) are audible as brighter, more highly pitched tones. The background galaxies are played as a soft pluck sound while the bright foreground star is accompanied by a crash cymbal."