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Interesting facts about space.

Although the moon appears to be changing according to the lunar phases, it is not literally changing. It was the amount of light it reflects that is constantly altering. The moon always remains the same and the light does not affect the shape of the moon, in any ways. In fact, it has has no power of light and it receives all the light from the Sun. Most people are unaware of this that they thought it is capable of glowing and beautifully bright. As a matter of fact, the moon is one mysterious yet very enchanting object.

and here is another

However, the fact of the matter is that moon will always remain the best option for mankind. The reason for this stems from the fact that the moon can always act as a stepping stone to the rest of the solar system and beyond. This is only natural, as the moon is in a very close proximity to Earth. Only by taking a 3 day trip, it is possible to reach the Moon with standard chemical propulsion techniques. However, in retrospect, going to Mars would require almost 100 times the amount of trip time of moon, since Mars is about 1000 times further then the moon. The amount of life support that is required for a mission that will take 2 years or more is definitely very costly and more importantly, the technological capability is not there. Thus, with our present global financial and technical capability, the moon is the only realistic option.

and finally

Planetary scientists believed for years that Earth's Moon is depleted of water and other volatile compounds. However, this idea began to change in 2008, when a team of scientists announced that they had detected traces of water in some of the volcanic glass beads carried back to Earth from the Apollo 15 and 17 missions to the Moon. In 2011, additional study of extremely small crystalline formations within those beads revealed that they contain amounts of water that are similar to some basalts on Earth. This indicates that the lunar mantle--at least, part of it--contains as much water as Earth's.

More information:

Earth's Moon consists of a core, mantle, and crust. The lunar core is proportionally smaller than other terrestrial bodies' cores. The iron-rich, solid inner core is 149 miles in radius, and it is encased within a liquid iron shell that is about 56 miles thick. A partly molten layer with a thickness of 93 milles surrounds the iron core.

In order to shed new light on the mysterious origins of the surviving duo of Martian moons, the researchers conducting this study combined their expertise in astrophysics, planetary science, computer science, and mathematics in order to create complex supercomputer models. The models ran a range of hydrodynamic and numerical simulations able to recreate the sequence of ancient events. Their findings strengthen the hypothesis that a horrific blast in the past formed the moons of Mars--originally a collection of moons and moonlets.

Such moon-forming mergers and collisions are not unheard of. For example, the leading theory explaining the formation of Earth's own large Moon, suggests that it was born about 4.5 billion years ago when a Mars-sized protoplanet, dubbed Theia by astronomers, collided with our planet. Just as our Moon is identical geologically to Earth's mantle, the six medium-sized icy sister moons of Saturn are all similar in composition to Titan's icy mantle, the researchers announced in October 2012.