關於Ifyouwatchtheskyfora的百科

• Ifyouwatchtheskyforaboutanhourafterthesungoesdown,youma...

• 問題詳情：Ifyouwatchtheskyforaboutanhourafterthesungoesdown,youmayseesome“movingstars”.Butthey’renotrealstars.They’reman-madesatellites(人造衛星).AndthebiggestofallistheInternationalSpaceStation(ISS).FromMaytoJulyisthebestseasontowatchtheISSflyingo...
• 2019-05-0415725