Tuesday, December 21, 2021

NASA records eerie ‘sounds’ on Jupiter’s moon: ‘It’s not scifi. It’s the real deal


Mark Price
Mon, December 20, 2021

NASA has recorded eerie “sounds” coming from one of Jupiter’s moons, and the audio is like something straight out of a 1950s science fiction movie.

This includes chirping, high-pitched whistling and hums. The noise also appears to speed up and build to a crescendo before mysteriously dropping.

“It’s not scifi. It’s the real deal,” NASA officials posted on Facebook.

The radio waves were recorded as NASA’s Juno mission “recently flew through the magnetic field of Ganymede, one of the gas giant’s many moons.”

Juno Principal Investigator Scott Bolton said the audio track was created when Juno’s instruments tuned “in to electric and magnetic radio waves produced in Jupiter’s magnetosphere,” according to a news release. The frequency was then “shifted into the audio range,” so we could “hear” Ganymede, scientists said.

“This soundtrack is just wild enough to make you feel as if you were riding along as Juno sails past Ganymede for the first time in more than two decades,” Bolton said in the release.

“If you listen closely, you can hear the abrupt change to higher frequencies around the midpoint of the recording, which represents entry into a different region in Ganymede’s magnetosphere.”

The radio wave emissions, collected on June 7, are considered one of the mission’s highlights, NASA said. The spacecraft “was within 645 miles (1,038 kilometers) of the moon’s surface and traveling at a relative velocity of 41,600 mph (67,000 kph).”

Analysis of the recording is ongoing, and some NASA scientists suspect the frequency changes might be due to the recorder “passing from the nightside to the dayside of Ganymede.”

NASA’s Facebook post announcing the recording has racked up 19,000 reactions and more than 800 comments, including some people who quoted the Bible (Isaiah 40:26). Meanwhile, the actual audio was posted on YouTube and has gotten more than 250,000 listens since Dec. 16.

“Listen. Sounds like a Beatles album,” Rick Tosches wrote on Facebook, referencing the White Album track “Revolution 9.”

“Once again, Star Trek was right!” Michelle Church Guzinski posted.

“I could be completely wrong but the sound seems to have a certain mathematical sequence to it. I have a Math degree,” Hank Mclaughlin said.


NASA recording of Jupiter's largest moon sounds like R2-D2

Li Cohen
Mon, December 20, 2021

NASA has spent years navigating Jupiter to understand the origin and evolution of our solar system's largest planet. And over the summer, researchers collecting radio waves from Ganymede made a surprising find — their recording of Jupiter's largest moon, when adapted to human ears, sounds like R2-D2.

The Juno mission, which launched in August 2011, arrived at Jupiter in July 2016. The Juno spacecraft has completed dozens of orbits around the planet, and on June 7, it flew closer to Jupiter's largest moon than any other in more than 20 years, coming within 645 miles of the moon's surface.

As it got close to Ganymede, NASA's Waves instrument collected data from electric and magnetic radio waves. Researchers then shifted the frequencies of these waves to make them audible, creating a 50-second moon track filled with chirps, beeps and boops that sound a lot like R2-D2 on its own mission in a galaxy far, far away.

Scott Bolton, the principal investigator of the Juno mission, debuted the audio track at the American Geophysical Union fall meeting in New Orleans on Friday.

"This soundtrack is just wild enough to make you feel as if you were riding along as Juno sails past Ganymede for the first time in more than two decades," he said in a NASA statement. "If you listen closely, you can hear the abrupt change to higher frequencies around the midpoint of the recording, which represents entry into a different region in Ganymede's magnetosphere."

Willam Kurth, lead co-investigator for the Waves project, said that it's possible the change in frequency is "due to passing from the nightside to the dayside" of the moon.

Ganymede, which is bigger than the planet Mercury and the dwarf planet Pluto, is believed to have an underground saltwater ocean, according to NASA, and is thought to have more water than all the water on Earth's surface.

It's the only moon known to have its own magnetic field.

This image shows two of Jupiter's large rotating storms, captured by Juno's visible-light imager, JunoCam, on Juno's 38th perijove pass, on November 29, 2021. / Credit: NASA/JPL-Caltech/SwRI/MSSS Image processing: Kevin M. Gill CC

At the conference, Bolton also unveiled "incredibly beautiful" new images of Jupiter.

"It's really an artist's palette. This is almost like a Van Gogh painting," he said during a conference news briefing. "You see these incredible vortices and swirling clouds of different colors."

Those vortices, researchers said, resemble vortices seen in Earth's oceans, and are believed to spontaneously emerge and "survive forever."

"Although Jupiter's energy system is on a scale much larger than Earth's, understanding the dynamics of the Jovian atmosphere could help



No comments:

Post a Comment