Is there life beyond(在……之外) the Earth? Many people are interested in this question and try 1 out the answer.
2 April 28, 2020, China's radio telescope(射电望远镜) FAST 3 to look for aliens.
Radio telescopes 4 find signals(信号) from space. On the Earth, 5 TVs and radios give out signals. Scientists 6 that if there are aliens beyond the Earth, their technology would also give out signals like ours does.
Many radio telescopes 7 the world are being used to look for aliens. In 1977, for example, the Big Ear radio telescope in the US found 8 strong signal from space. Many 9 believe it may have come from aliens.
FAST is the world's largest and most sensitive radio telescope. 10 can find even the weakest signals from space. Scientists are 11 about what it might find in the future.
Finding aliens might sound exciting, 12 some scientists think that we should not contact(联系) aliens. For example, the famous British scientist Stephen Hawking believed that aliens 13 dangerous. 14 they find us, they might take resources from the Earth. That would be very bad 15 us. What do you think?
