初中英语活页文选B级第一辑求译,
Oursunisastar,andniceworldsmovearoundit.Worldliketheseareplanets.Butthereareotherstars,othersuns.Notonlythousandofthem,butmillionsofthem.Dootherstarshaveplanets?Wecanseetheplanetsroundourownsun.Butwehasn'tseenanymore.Thestarsaretoofarawayformus.Starsgiveoutlight,buttheplanetsdon'thaveanylightoftheirown.Sowecan'tseethem.Theyaretoofar,andtoodark.
Still,wecantellthatsomestarshaveplanets.Whileabigplanetgoesround,itpullsitsstartooneside.Andsometimeswecanseethis.Thenweknowthatthestarhasaplanet.
Forexample,Barnard'sStarisasmallredstar.Anditisthequickeststarintheuniverse.Butsometimesitmovesslower,andthenquickeragain.WehaveknownBarnard'sStarformanyyears,andnowwearesureithasaplanet.
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