We have a very good Islamic community radio station here in Cape Town.
The following story was told for the honest truth on our Muslim radio 
the other day:

 When Louis Armstrong and co. walked on the moon, they heard sounds 
 in a strange language they did not understand. Only later, after 
 returning to earth, did they realize that it was actually the azaan!

I have seen a few mosques with powerful speaker systems, but wow, 
somebody down here certainly turned on the power on that day!