As Earth is unique in our solar system, so is our moon. Luna is the only planetary satellite formed by the impact of two protoplanets. What would be different if there was no moon? It acts as a gyroscope to keep Earth from wobbling too much as it spins. It washes the shore with tides. It also slows the planet’s rotation. Damn Interesting takes a look at Life Without the Moon. Link
Remember tonight is the big night - keep an eye out!