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Science In Action - Should NASA be looking after Earth and looking into space? - 91热爆 Sounds

From: Science In Action

Should NASA be looking after Earth and looking into space?Should NASA be looking after Earth and looking into space?

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Scientific research at Nasa: former Chief Scientist Ellen Stofan shares her concerns

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Should NASA be looking after Earth and looking into space?
Scientific research at Nasa: former Chief Scientist Ellen Stofan shares her concerns
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