Is there have alien spacecraft

Is there have alien spacecraft - Alan Gao AEP2 Is there...

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1 Alan Gao AEP2 Is there have alien spacecraft The existence of alien has always been a hot topic. Aliens are mysterious existence, human being have been trying to find them. Do aliens really exist? There are three reasons to prove that aliens may exist such as the universe is huge, many mysteries and witnesses. On the one hand, the universe is huge. There are thousand of plants. The scope of human exploration of the universe is too small. The earth is not only one planet of suit life to live. For example, the water is the most important condition to the existence of life. In the solar system have to many planets have water, such as Mars, there have water until now. According to the journal Science in November 2014, scientists predit that there are a huge number of galaxies in the range of 100 billion galaxies that are currently being observed, and that at least 10 billion galaxies can be produced and continue to live. So we can’t deny have a planet like earth.
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