或者说，由于伽利略利用望远镜对夜晚的星空做的详细的观察，至少我们对它的认知发生了改变。
Or, at least, our perception of it did, thanks to Galileo Galilei's scrutiny of the night sky with a telescope.
作为伽利略的周年纪念活动，国际天文年希望提醒我们在仰望星空时，感受到个人的谦卑。
Marking Galileo's anniversary, the International Year of Astronomy seeks to remind us of the humbling nature of gazing at the heavens.
400年前，伽利略将他自制的小望远镜对准星空，发现了木星的四颗卫星，我们这才知道其他行星也有自己的卫星。
Four hundred years ago, Galileo raised his homemade spyglass to the sky and spotted four of Jupiter's moons, revealing that other planets could have their own lunar companions.
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