ronniecanswim

UFO does not exist, because is too far for UFO to fly to earth,  公仔箱論壇9 A2 l1 d; z5 n/ L

! w9 ^# ]8 P' ]$ a# ^/ Mlight travels @300,000km per second, the distance from other planet has live forms may be more than 1 million light years
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/ A) [, \" X" s! x$ h% Idistance is the limitation for travel