Sound

[martin_h]

We have all heard that stars are formed from "dense clouds of gas and dust" would these clouds be dense enough to carry sound?, Like air is on earth?

[Alien 13]

10 minutes ago, martin_h said:

We have all heard that stars are formed from "dense clouds of gas and dust" would these clouds be dense enough to carry sound?, Like air is on earth?

I think a resent program suggested they do even across galaxy's the frequency is very very low.

Alan

[Ravenous]

There were various articles a decade or so ago which claimed to have found a "note" emitted by (I think) rotating jets.  The frequency was extremely low though.

And calling this "sound" is a bit of a stretch, due to the very low frequency and the very low pressure.

EDIT: I think this may be the one I was thinking of (around 2003):

https://www.nasa.gov/centers/goddard/universe/black_hole_sound.html