The moon is hypothesized to be made of material from when Theia (hypothetically) struck Earth billions of years ago. Most of the matter became the Earth and some spun out into space and became the moon.
He's acting pretty rationally trying to get people killed. If Obama was killed, what sort of message would that send to his followers, to his opposition, and to prosecutors?
The single death that could have supercharged his stochastic terrorism.