If you go to visit one of my favorite places here in Shanghai in Xuhui, Xu Guangqi Memorial, you can see Matteo Ricci and Xu Guangqi talking about astronomy with Galileo telescope.

如果你参观徐光启纪念馆——那也是我在上海最喜欢的地方——你会看到利玛窦和徐光启拿着伽利略望远镜在探讨天文学。

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This was the thinking of European astronomers until the introduction of the telescope, which brings us to our old friend, Galileo.

这是望远镜出现前欧洲天文学家的想法，这就说到了我们的老朋友伽利略。

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Galileo did not invent the telescope, but on hearing, in 1609, that such an optical instrument had been made, he quickly built his own device from an organ pipe and spectacle lenses.

伽利略并没有发明望远镜，但在1609年听到有人制造了这种光学仪器后，他很快用管风琴管和眼镜镜片制造了自己的望远镜。

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This year also marks the four hundredth anniversary of the first recorded astronomical observations with a telescope by Galileo.

VOA: special.2009.10.27

So with his optic glass, his telescope, Galileo was able to discern spots on the orb of the moon.

因此通过他的磁光玻璃，望远镜，伽利略能够分辨出月亮轨道上的斑点。

耶鲁公开课 - 弥尔顿课程节选

Galileo's only using, of course, his telescope in the first place because his human capacity for vision is insufficient to see the truths of the heavens.

他唯一一次用到望远镜,是因为仅凭人类的视力,并不能够看到天堂的真理所在。

耶鲁公开课 - 弥尔顿课程节选

Information on Project Galileo and the Hubble Space Telescope is also available.

CNN: The Internet: the final frontier for space watchers

On August 25th 1609 an Italian mathematician called Galileo Galilei demonstrated his newly constructed telescope to the merchants of Venice.

ECONOMIST: In praise of astronomy, the most revolutionary of sciences

Of course Galileo made great use of the telescope, and his discoveries--that Jupiter has its own moons, that the Milky Way is made of stars, that Venus has phases just like the moon--were turning points.

FORBES: The Universe and Mrs. Ferguson