Aliens can’t hear us, says astronomer
Fainter broadcasting signals and digital switchover mean Earth will soon be undetectable to aliens and extraterrestrials.
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Why don’t those aliens contact us?
Aliens. The indispensable subject of science fiction movies, ‘aliens communicating with humans’, is this time under lens of science. ‘If aliens really exist, why haven’t they tried to contact us?’
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Our galaxy may be full of civilizations that destroyed themselves
Our galaxy. There are 40 billion Earth-like planets in the universe. However, there is still no evidence proving that there is life outside the Earth. A new theory has been put forward on subject.
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