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        <div id="content-top1">Page 23 - kao006</div>
        <div id="content-top2">P. 23</div>
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    <pre style="white-space:pre-line"><code>?? ??섎뒗  蹂꾨뱾?? ?붾엺
            ?? 蹂꾩씠  ?꾩깮?섍퀬  二쎈뒗??            ?? 蹂꾩?  醫뗭?  ?듭쑖?? 怨듭옣
            ?? 以묒썝?? ?좎궛?? ?④릿??            ?? ?섏꽑?붿?  蹂꾪깂?? ?μ냼


            2.  ??섏쨷?? ?붿젏
            ?? 以묒븰  ?쎈?遺?? 蹂꾨뱾?  ?섏씠媛  ?媛? 留롫떎.
            ?? ?섏씠  留롮?  蹂꾨뱾?  蹂댄넻  遺됯퀬  嫄곕??? 嫄곗꽦?ㅼ씠??
            ?? ?숈?  蹂꾨쭔?? ?꾨땲?? ?덈줈  ?? ?딆?  蹂꾨뱾?? ?덈떎.
            ?? ??? 以묒떖?먮뒗  蹂꾩쓽  怨좊룄濡? 諛吏묐맂  ?곸뿭?? ?덈떎.
            ?? 洹? ?? 以묒떖?? 4  諛깅쭔  ?쒖뼇吏덈웾?? 釉붾옓??? ?덈떎


            3.  ??섏?  ?앸챸泥?            (1)  嫄곗＜?곸뿭(Habitable  Zone)
            ?? ?쒖뼇怨? ?덉そ:  ?덈Т  ?④쾪??            ?? ?쒖뼇怨? ?멸낸:  ?덈Т  李④컩??            ?? ?앸Ъ?? ?? ?? ?덈뒗  ?곸뿭?  醫곷떎


            (2)  ??섍굅二쇨??μ쁺??            ?? ??? 以묒떖  洹쇱쿂:  蹂꾩씠  ?덈Т  留롫떎:  ?쒖뼇怨꾧?  ?덈떎  ?대룄  ?됱꽦?? 遺덉븞?뺥빐?? ?? ?? ?녿떎
            ?? ??? ?멸낸  ?곸뿭:  以묒썝?뚭?  ?곷떎:  ?먮즺媛  ?щ젮?? 吏援ы삎  ?됱꽦?? 留뚮뱾?댁쭏  ?? ?녿떎.</code></pre>
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