* Vacuum: The moon has no atmosphere. This means there's no air to scatter sunlight, which is what makes the sky appear blue on Earth. Without an atmosphere, the sky on the moon appears black, even during the day.
* Lack of Oxygen: You would immediately suffocate in the vacuum of space.
* Extreme Temperatures: The moon's surface temperature fluctuates wildly between extreme hot and cold, which would be fatal without a suit.
You wouldn't survive long enough to see anything, let alone the sun!
