When you can see half the moon shining from the earth’s surface it is called

It's called Earthshine. To understand Earthshine, remember that the moon is globe, just as Earth is, and that the globe of the moon is always half-illuminated by sunlight.

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.