- 問題詳情:NASAismovingaheadwithplanstoputalong-armedLanderonMars’icyNorthPoletosearchforcluesforwaterandpossiblesignsoflife.The$386millionPhoenixMarsisplannedtotouchdownintheMartianarcticin2008.Thestationaryprobewilluseitsroboticarmtodigintotheicyland...
- 11373