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A moon is a natural satellite consisting of solid material that naturally orbits a planet or dwarf planet. Although the Earth has just one moon, there are other planets that have more, and some that even have none. Moons... More »

www.reference.com Science Astronomy

No concrete evidence explains why there is a moon. The best hypothesis presented is the Giant Impactor hypothesis: It suggests that around 4.45 billion years ago, while the Earth was still forming, a large object hit the... More »

www.reference.com Science Astronomy Our Moon

A person can draw a simple moon using a circle or crescent shape, with or without the facial features of a cartoon moon. To draw a detailed, realistic moon, a person could use shading to indicate the darker areas and ens... More »

www.reference.com Art & Literature Fine Art Drawing
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After Galileo built his first telescope in 1609, he observed and described the landscape of the moon, discovered four of the moons of Jupiter, discovered the phases of Venus, and discovered sunspots. Galileo's discovery ... More »

www.reference.com Science Astronomy

The International Astronomical Union (IAU), an organization of astronomers, names the craters on planets and moons in the solar system by giving each planet a creative theme. For example, the moon’s craters are usually n... More »

www.reference.com Science Astronomy

Although scientists use the term celestial body quite broadly, when they refer to a celestial body orbiting another body they are generally talking about natural satellites, or moons, orbiting a larger body such as a pla... More »

www.reference.com Science Astronomy

The name of Earth's natural satellite is the moon. In terms of size, the moon is not the biggest natural satellite in the solar system, but it is large and ranks fifth among the other moons. In fact, the moon is one of t... More »

www.reference.com Science Astronomy