Thesearchforplanetsbeyondoursolarsystemhasbroughtanhistoricdiscovery:aplanetslightlylargerthanEarthorbitingastarcalledProximaCentauri.Atjustover40trillionkilometersfromtheSun,ProximaCentauriisourcloseststellarneighbor.Doesitsplanethaveaclimate,orevenlife?　　Whatwillittaketogetacloserlook,tolaunchourfirstinterstellarjourneytothePaleRedDot?