Survival on the new "Earth"

The earth is the lucky third planet from the sun and the four largest planetes of the solar system. It is the perfect place for humans to live because all the things human beings need are available. The end of the world forecast has been denied before. However, many people predict that 2012 will be the end of our world. According to Maya's calendar, the world will end in 2012. As a result, NASA is trying to find another planet on which the person lives, if the earth really ended in 2012 as an organization to investigate astronomy. From all perspectives, some of the obstacles human beings must overcome can be realized.

When considering living on other planets, the conditions on Earth that help us to survive must first be considered. On the earth, humans can walk around the earth, suck oxygen, drink liquid water, survive at comfortable temperatures, and resist the sun's energy waves. It is not easy to find all these conditions with various stellar objects. Scientists are looking for the next good thing, Titan and Mars are running. As it is not even a planet, Titan may be an unexpected candidate for human settlement, although it has many planetary features. It is the second largest month in our solar system, bigger than Moon and Mercury. More importantly, Titan is the only moon in our solar system that has the characteristics of the atmosphere and clouds resembling the Earth.

Eclipse occurs only under the sun, the earth and the moon are on a straight line (called "syzygy"). When the moon is between the sun and the earth, a solar eclipse occurs in the new moon. By contrast, when the earth is between the sun and the moon, the moon occurs in the full moon. The size of the apparent moon is basically the same as the size of the sun, and both angle of view are close to half the width. The sun is much bigger than the moon, but that distance is much larger than that approximate and much smaller moon from the Earth perspective. Because of noncircular orbits, apparent size changes are almost the same, but they occur at different cycles. This enables a solar eclipse (the moon looks bigger than the sun) and a ring (the moon looks smaller than the sun). Among the whole food, the moon completely covers the sun disk, and the naked eye can see the sundial