I know, Id not heard that one before either.
Must be on their new album.
The tune was a hit, and NASA even startedpromotingtheir Soundcloud off the back of it.

I was looking into going to see them live but there isnt another launch window for weeks.
A galaxy cluster has so much gas that we’ve picked up actual sound.
you’re free to read a layman’s explanation of ithere.

The gist is that they take data and convert it into sound.
If you want to check out more banging choons from NASAs sonification project then theres asitefor that.
In areplyto a commenter, Braben confirmed that Frontier use sonification for Elite Dangerous.
Halley base is one of the most radio-quiet locations on Earth for recording signals from space.
Its well worth a read, sci-fi fans.
If you listen very carefully, you could probably hear me typing away furiously while you play it.