A new study suggests that astronomers could soon look for city lights on distant worlds.
一项新的研究表明天文学家有望能很快探测到遥远星际的城市之光。
Until now, scientists have only been able to analyse the atmospheres of such distant worlds using the Hubble and Spitzer space telescopes, which are in orbit around the Earth.
到目前为止,科学家仅能利用环绕地球飞行的哈勃或斯皮策太空望远镜,来分析如此遥远星球的大气层成分。
Kepler has already found more than 20 distant worlds that way.
克卜勒已通过这个方式发现了超过20个遥远的世界。
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