A planet lighter than a ball of cork is one of the puffiest alien planets known to date.
根据数据已知，比一个软木塞球还轻的行星是最膨胀的外行星之一。
Earth seems to have its first fuzzy photos of alien planets outside our solar system, images captured by two teams of astronomers.
根据两个天文组拍到的照片，地球上的人似乎第一次拍到了太阳系外行星的模糊影像。
To date, astronomers have found nearly 500 alien planets, more than 90 of which cross in front of -or transit -their stars from our perspective.
迄今为止，天文学家已发现近500个外来行星，其中90多个在前面交叉-或过境-从我们的角度来看他们的明星。
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