返回 【Earth&Sky】太空探索还是专注于研究地球?

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Humanity has the technology for human space travel. But should we use it?

Frank Wentz:[---1---]

That's Frank Wentz of Remote Sensing Systems in Santa Rosa, California.

Frank Wentz:[---2---]

[---3---]

Frank Wentz:[---4-5---]

And if we lose even some satellite coverage, Wentz said, [---6-7---] Human space travel to Mars,or satellite measurements of Earth?Tell us at earthsky.org.

Our thanks today to NASA: explore, discover, understand.
I'm Deborah Byrd from E&S, a clear voice for science.

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