'Moon' Category Archives

Lunar Month

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The Sun and the Moon are two of the most observed celestial bodies. These celestial bodies that are seen at day and night time are often the basis for determining time. The Moon has been observed over time and its phases and eclipses have been the source of many superstitions and time calculations. A lunar […]

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Atmosphere of the Moon

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The moon can be seen tracking across the sky night after night. We watch it rise from the Eastern horizon and set into the Western horizon early each morning, and it has been the source of mystery and speculation since the dawn of human existence. Many of the theories we had about the moon have been […]

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Distance to the Moon

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In astronomy, the distance of the Moon from Earth is known as the lunar distance. The average distance of the Moon from the center of the Earth is calculated to be 384,400 km (238,855 mi). This is the average of the distance at the apogee and perigee of the Moon from Earth. Methods for Calculation […]

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Inside the Moon

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Looking up at the night sky, we can see the bumpy, craggy, outer surface of the moon. We can actually spot the mountains and craters from our vantage point on earth, some 400,000 kilometers (248,548 miles) away. Since the very first landing by Russian astronauts in 1959, moon rocks have been brought back to earth to […]

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History of the Moon

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The Earth’s moon has a rich history. Ever since the very first recorded documentation of the moon, the bright, celestial body has been shrouded in an air of mystery. Throughout the course of time, the moon has been the inspiration for religious symbols, the symbol for fertility, and even the blame for different mental disorders. […]

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How Old Is The Moon?

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Although the formation of the Moon is still a mystery, most scientists believe it was formed at roughly the same time as the rest of our solar system. The most widely held theory is that the Moon was formed approximately 4.5 billion years ago when a planet sized object about the same size as Mars […]

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Layers of the Moon

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Just like the earth, the moon has layers. There are three distinct layers of the moon namely the crust, the mantle, and the lunar core. Crust The crust is the outermost layer of the moon and it consists of a dusty outer rock layer which is known as the regolith. The regolith is a rocky […]

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Mass of the Moon

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The mass of the moon, which is the Earth's only natural satellite, is about 7.4 x 1022 kg. While the moon is the solar system's fifth largest satellite, its mass is 1/4 that of Earth, which makes it the biggest when compared to the body that it orbits. The moon and sun appear to be […]

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How Big is the Moon?

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The Moon shining brightly in the night sky looks really big as compared to all the other stars twinkling beyond. Is this an illusion or is the Moon really big? Perceiving the Moon to be big by looking at it is not a real measure of the Moon’s actual size. What we see is actually a […]

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How Big is the Moon Compared to Earth?

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The moon appears as the biggest celestial body in the night sky, yet it is never really possible to look at it and gauge how big it really is compared to the earth. It is impossible to come to a conclusion through visual observations. To know how big is the Moon compared to Earth one […]

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