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Do you know which the largest radio telescope (射电望远镜) all over the world is? It is Tian-yan that was finishedSep 25th, 2017 in China. The Chinese government built such a huge project all by . Tianyan lies in the deep mountains of southwest China's Guizhou Province, with a huge dish the size of 30  playgrounds.

There is not a or a city with5 kilometer radius (半径范围) and there is only one county (县) within 25-kilometer radius. All the situations helpTian-yan work in such an environment.

Tian-yan is made up of 4, 450 panels (面板).The second largest radio telescope is in Russia. The dish of Tian-yan was built big enough to weaker signals (信号).

Tiar-yan is usedto meaningful radio message from space. we can faraway messages in space by the huge telescope. It can also help us to search for intelligent life outside the Galaxy (银河系) and discoverspace was born .

"Any of its discoveries will lead to a Nobel Prize, "said Joseph Taylor, a Noble Prize winner.

The project for Tian-yan began in 2011. And the telescope is expected to remain the one all over the world until 2031.

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