'Short' here certainly has a relative context. Gray-white spheres in the sky earth is 362 thousand miles from Earth. The mission to the moon of course is not easy, especially on a manned mission. No human being to set foot on the moon before 1972.
Afterwards, many countries around the world began to do research on the Earth's satellite. Future missions by robots and humans will help solve some of the major puzzles Month. Included.
How moon reached its present position
Scientists claim to have any idea what really happened. Many lines of evidence (small nuclei month, certain elements of complementary and computer simulation rounds orbital moon for thousands of years) suggests, month born from a giant collision.
According to this theory, some 4.5 billion years ago, a Mars-sized object hit the young Earth and a liquid. The material results of the collision that was merged into months.
Months 'blue'
Evidently, a lot of water outside and inside the moon. This led researchers to reach a conclusion. "More and examined, the more water found in different places and depths," said Neil Comins physics professor at the University of Maine.
The study shows the interior in much wetter than it should. Recent re-examination of rock samples brought to Earth even has a watermark. "An open-ended questions regarding the origin and distribution of water on the moon," said Comins.
'Locked' Earth
Months 'locked' Earth. That is, there is only one hemisphere facing the Earth. Side is called maria, or 'sea,' cold magma. Surprisingly, maria hardly found in the back of the moon, as revealed by satellite data (and viewed directly Apollo 8 astronauts).
Hemisphere winter is known to have a thick crust (15 km) compared to the other side. This makes the parts on the other hand more easily cracked due to release the meteorite strike forming magma depth maria months, Comins said. However, this asymmetry crust itself is a puzzle.
Larger models in the interior and a better understanding of the damage from the collision could help explain the 'two faces' this weird.
The key to human existence?
At a quarter in diameter and more than 1% the mass of Earth, the moon being the fifth largest natural satellite in the solar system. Sufficient mass and gravity moon stabilizes the 'wobble' in the Earth's axis.
In addition, the moon causes the ocean tide on Earth that might help 'stirring the primordial soup,' continued Comins again. In short, astronomers wondered whether the world needs a large moon like Earth that life could develop.
The answer to that question may be in a neighboring planet, Mars. Red Planet has two small moon. "When humans to Mars and to determine whether and how life evolved there. It will help better understand how life formed no moon, "added Comins.
Hopefully Helpful,,, :)
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