Generally, there are 12 full moons each year. Each of the four seasons has three months, with each month containing a full moon. Occasionally, one of the seasons has a fourth full moon.
The third full moon of a season with four full moons is called a blue moon. Half of the moon is illuminated at all times by the sun. As the angle of Earth, the moon and sun change, different portions of the illuminated side are visible. During the full moon, the moon is on the opposite side of Earth, and the entire sunlit portion of the moon can be seen.Learn More
The basic things people need for long-term survival on the moon include breathable air, water, food, power and pressurized shelter. Ideally, people should produce these resources on the moon because delivery costs to the moon are extremely expensive.Full Answer >
Space travel requires a lot of research and preparation, and by the time the Apollo program wrapped up in the 1970s, its total cost was about $30 billion, which would be well more than $100 billion dollars in 2015 money. This total cost reflects work that took place over several years.Full Answer >
One lunar day, the length of time it takes the moon to complete a full rotation on its axis, is equivalent to 28 days on Earth. This is also the amount of time it takes for the moon to complete its orbit around the Earth.Full Answer >
The lunar crust is made of 43 percent oxygen, 20 percent silicon, 19 percent magnesium, 10 percent iron, 3 percent calcium and 3 percent aluminum. The moon's core is thought to consist of iron, sulfur and nickel, with the largest middle layer, or mantle, composed of olivine, clinopyroxene and orthopyroxene.Full Answer >