The Milky Way Sounds Like a Wacky Jazz Ensemble

Listen up.
Listen up. Ian Norman/CC by SA 2.0

Mark Heyer, an astronomer at the University of Massachusetts Amherst, has spent more than a quarter of a century dreaming about the sounds of space.

At first, he just wanted to get a better grasp on his data. Heyer studies galactic gases, and in the 1990s, he was using a telescope to collect 3-D measurements of specific clouds of gas in the Milky Way. He could see that the clouds were turbulent, often collapsing or expanding, but when he examined the data with the help of a computer, the velocity variable got lost. Heyer needed a way to visualize not just two points on a map, but what happened between them. Translating three dimensions into something viewable on a two-dimensional screen required a little creativity, and he landed on the idea of transforming the motion into sound. As you moved your cursor around, you’d hear something different; various pitches corresponded to various velocities. “Initially, it was a functional idea,” he says. “But if you’re going to that effort, why not make music?”

Eventually he wanted to scale up to a musical composition that captured the “sound” of the atomic, molecular, and ionized gases across the Milky Way. “I thought it would just sound like noise or randomness,” he says. “But the more I thought about it, I realized you’d be hearing the rotation of the galaxy,” which has “big, obvious motions,” he says. Heyer suspected that, by transforming the data collected by radio telescopes into a musical scale, he would end up with something rather consonant.

He just wasn’t sure exactly how to pull it off. Heyer couldn’t compose and play the music himself—he has dabbled with guitar and mandolin and once built a dulcimer, which he “can hack on a little bit,” but he’s not an especially skilled musician. (“I know just enough to be dangerous,” he says.)…

Sasha Harriet

Sasha Harriet

As content editor, I get to do what I love everyday. Tweet, share and promote the best content our tools find on a daily basis.

I have a crazy passion for #music, #celebrity #news & #fashion! I'm always out and about on Twitter.
Sasha Harriet

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