20190515 周三 Day213

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[Day 213 2019-05-15]

L55-3: From the earth: Greetings

A telescope would have to be as far away as the planet Jupiter to look for life in outer space, because the dust becomes thinner the further we travel towards the outer edges of our own solar system. Once we detected a planet, we would have to find a way of blotting6 out the light from its star, so that we would be able to 'see' the planet properly and analyze7 its atmosphere. In the first instance, we would be looking for plant life, rather than 'little green men'. The life forms most likely to develop on a planet would be bacteria. It is bacteria that have generated the oxygen we breathe on earth. For most of the earth's history they have been the only form of life on our planet. As Earth-dwellers, we always cherish the hope that we will be visited by little green men and that we will be able to communicate with them. But this hope is always in the realms of science fiction. If we were able to discover lowly forms of life like bacteria on another planet, it would completely change our view of ourselves. As Daniel Goldin of NASA observed, 'Finding life elsewhere would change everything. No human endeavor or thought would be unchanged by it."

ə ˈtɛlɪskəʊp wʊd hæv tuː biː æz fɑːr əˈweɪ æz ðə ˈplænɪt ˈʤuːpɪtə tuː lʊk fɔː laɪf ɪn ˈaʊtə speɪs,bɪˈkɒz ðə dʌst bɪˈkʌmz ˈθɪnə ðə ˈfɜːðə wiː ˈtrævl təˈwɔːdz ði ˈaʊtər ˈɛʤɪz ɒv ˈaʊər əʊn ˈsəʊlə ˈsɪstɪm**. wʌns wiː dɪˈtɛktɪd ə ˈplænɪt,wiː wʊd hæv tuː faɪnd ə weɪ ɒv ˈblɒtɪŋ6 aʊt ðə laɪt frɒm ɪts stɑː,səʊ ðæt wiː wʊd biː ˈeɪbl tuː siː ðə ˈplænɪt ˈprɒpəli ænd ˈænəlaɪz7 ɪts ˈætməsfɪə. ɪn ðə fɜːst ˈɪnstəns,wiː wʊd biː ˈlʊkɪŋ fɔː plɑːnt laɪf,ˈrɑːðə ðæn ˈlɪtl griːn mɛn. ðə laɪf fɔːmz məʊst ˈlaɪkli tuː dɪˈvɛləp ɒn ə ˈplænɪt wʊd biː bækˈtɪərɪə. ɪt ɪz bækˈtɪərɪə ðæt hæv ˈʤɛnəreɪtɪd ði ˈɒksɪʤən wiː briːð ɒn ɜːθ. fɔː məʊst ɒv ði ɜːθs ˈhɪstəri ðeɪ hæv biːn ði ˈəʊnli fɔːm ɒv laɪf ɒn ˈaʊə ˈplænɪt. æz ɜːθ-ˈdwɛləz,wiː ˈɔːlweɪz ˈʧɛrɪʃ ðə həʊp ðæt wiː wɪl biː ˈvɪzɪtɪd baɪ ˈlɪtl griːn mɛn ænd ðæt wiː wɪl biː ˈeɪbl tuː kəˈmjuːnɪkeɪt wɪð ðɛm. bʌt ðɪs həʊp ɪz ˈɔːlweɪz ɪn ðə rɛlmz ɒv ˈsaɪəns ˈfɪkʃən. ɪf wiː wɜːr ˈeɪbl tuː dɪsˈkʌvə ˈləʊli fɔːmz ɒv laɪf laɪk bækˈtɪərɪə ɒn əˈnʌðə ˈplænɪt,ɪt wʊd kəmˈpliːtli ʧeɪnʤ ˈaʊə vjuː ɒv ˌaʊəˈsɛlvz. æz ˈdænjəl Goldin ɒv ˈnæsə əbˈzɜːvd,ˈfaɪndɪŋ laɪf ˈɛlsˈweə wʊd ʧeɪnʤ ˈɛvrɪθɪŋ. nəʊ ˈhjuːmən ɪnˈdɛvər ɔː θɔːt wʊd biː ʌnˈʧeɪnʤd baɪ ɪt." **

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