sNewHorizonsprobe的甄选

问题详情： NASA-sNewHorizonsprobe（宇宙探测器）flewbyPluto（冥王星）thismorning,sendingbackhistory'sfirstup-closelooksatthevastfreezing-coldworld. Closestapproachcameat7:49a.m. EDT. Tocelebrate,NASAgaveout...