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虽然有关2012地球末日的谣言已经不攻自破,但人类如何面对在未来可能发生的地球灾难却是一个经久不衰的话题,因为地球并不是始终适宜人类生存的。众所周知,大约20亿年前太阳膨胀使地球的海洋沸腾,当时的地球并不适宜生物存在;除此之外,数十亿年之后仙女座星系将与银河系发生碰摘,人类或许将从地球上被抹杀;同时,约550千米宽的小行星带时常掠过地球轨道,科学家评估每隔30万年会有一箱小行星碰摘地球。
Although the rumor about the end of 2012 Earth is already breaking ground, how humans face the possible global catastrophe in the future is an enduring topic because the Earth is not always suitable for human existence. It is well-known that about 2 billion years ago, the sun’s swelling caused the earth’s oceans to boil. At that time, the earth was not suitable for living beings. In addition, billions of Andromeda galaxies would hit the galaxy Billions of years later, At the same time, an asteroid belt of about 550 kilometers wide often orbits Earth’s orbit and scientists evaluate that as many as one box of asteroids hit the Earth every 300,000 years.