Galileo built a telescope through which he could study the sky.

伽利略建造了一台用来观察天空的天文望远镜。

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Galileo used this powerful telescope to study the sky four days after a new moon.

伽利略在新月出现四天以后用这种强大的望远镜观察天空。

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You needed to study the sky to a high standard because you needed to make the best possible predictions.

对天空的研究你需要达到到一个高的级别，因为你需要做出最佳可能的预言。

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This, he said, would add to data currently being collected by another Canadian mission, called MOST, which is using a 15cm (6in) telescope aboard a satellite to study the sky.

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The European mission will instead study the influence of dark energy by looking for subtle distortions in the way galaxies appear as they line up on the sky, and by measuring the patterns in the three dimensional distribution of galaxies through time.

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