科研之友
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摘要
<正>天文学家发现了一颗叫作K2-18b(也叫"超级地球")的系外行星,该行星存在和地球相似的大气环境,但科学家称该行星是否满足生命存在的条件还需进一步探究。A new study focuses on K2-18b, an exoplanet (系外行星) discovered in 2015, orbits a red dwarf star close enough to receive about the same amount of radiation from its star as Earth does from our sun.
