There is only one full moon each month because the moon only opposes the sun once per month in its orbit. The phases of the moon are caused by how much of its visible surface is illuminated by the sun's light, and a full moon only occurs when the moon is on the opposite side of the Earth from the sun.Know More
As the moon travels around the Earth, its phase changes. When the moon is on the same side of the planet as the sun, its illuminated surface is facing away from Earth, causing the visible portion of the moon to appear completely dark. As it orbits, more of its illuminated side becomes visible, transitioning from the dark "new moon" to a "crescent," "half" and "gibbous" moon. Only when the moon is in direct opposition to the sun is the entire surface illuminated, producing a full moon. Since this only happens once per orbit, there is only one full moon per month.
Full moons are also the only time lunar eclipses occur. The moon must be in a particular arrangement with the Earth for the Earth's umbral shadow to darken the moon's surface, and even then refracted light through the atmosphere gives it a dark reddish glow instead of obscuring it completely.Learn more about Our Moon
To find out when the next full moon will be, use an online directory of full moon dates or make an educated prediction based upon the moon's current place in its cycle. Some online directories of moon dates include MoonGiant.com, MoonPhases.info and Space.com.Full Answer >
The phases of the moon, from darkest to brightest, are the new moon, the crescent moon, the quarter moon, the gibbous moon and the full moon. As the moon fills out in the sky, it passes through the waxing crescent, first quarter and waxing gibbous phases. As it returns to darkness, it passes through the waning gibbous, last quarter and waning crescent phases.Full Answer >
Though scientists find the phenomenon hard to explain, it may be true that people tend to get a little bit less sleep during a full moon, and the sleep they do get is not as deep as it is at other times of the month. While increased nighttime light could be an issue, research showed that the moon impacted subjects' sleep even if they were in a windowless room. However, the European scientists who conducted this study, which was reported in 2013, seem to doubt their own findings.Full Answer >
While the name "blue moon" conjures up a vivid, colorful image, the term actually refers to those times when there are two full moons in a single month; that second full moon is referred to as the blue moon, though its color is likely to be the same as it ever is. It is possible for the moon to have a bluish appearance, but this is usually due to atmospheric changes on earth, such as smoke or ash in the upper atmosphere as the result of fires or volcanic activity.Full Answer >