Putting the moon on fire

[LandonTheGuy]

So basically i had this statement from tf2 for some weapons "Since man first thought to look up at the sky, there has been the Moon. And with it, the eternal question, 'How do I light the moon on fire?'", this is backed up by the fact that we got this other photo of pyro where he seemingly did it, but my question is:

Is there a way to calculate this feat for ap? The weapons are called "Space friendly" so i assume they work as well as they work on earth, so we assume everything works.