Thesearchforlifeouts的精選

問題詳情：ThesearchforlifeoutsidetheEarthmayhavemovedtoanewandexcitinglevel.Ateamofastronomers(天文學家)saidtheyhavefoundanewplanetthathasmanyimportantpartssimilartothoseoftheEarth.Theplanet, whichtrav...