▁A ▁to ▁B ), ▁it ▁would ▁appear ▁that ▁the ▁dot ▁of ▁light ▁is ▁moving ▁at ▁super l um inal ▁veloc ities , ▁when ▁in ▁reality , ▁it ' s ▁success ive ▁phot ons ▁being ▁em itted ▁by ▁the ▁source ▁moving ▁across ▁the ▁face ▁of ▁the ▁moon . ▁ ▁Resol ution ▁of ▁the ▁par ado x ▁in ▁special ▁relativ ity ▁ ▁The ▁par ado x ical ▁aspect ▁of ▁each ▁of ▁the ▁described ▁thought ▁experiments ▁ar ises ▁from ▁Ein stein ’ s ▁theory ▁of ▁special ▁relativ ity , ▁which ▁proc laim s ▁the ▁speed ▁of ▁light ▁( approx . ▁ 3 0 0 , 0 0 0   km / s ) ▁is ▁the ▁upper ▁limit ▁of ▁speed ▁in ▁our ▁universe . ▁The ▁uniform ity ▁of ▁the ▁speed ▁of ▁light ▁is ▁so ▁absolute ▁that ▁regardless ▁of ▁the ▁speed ▁of ▁the ▁observer ▁as ▁well ▁as ▁the ▁speed ▁of ▁the ▁source ▁of ▁light ▁the ▁speed ▁of ▁the ▁light ▁ray ▁should ▁remain ▁constant . ▁ ▁When ▁considering ▁the ▁movement ▁of ▁an ▁image ▁created ▁by ▁a ▁las er ▁on ▁the ▁moon , ▁some ▁physical ▁limitations ▁would ▁have ▁to ▁be ▁viol ated ▁in ▁order ▁to ▁trace ▁out ▁the ▁apparent ▁traject ory ▁at ▁super l um inal ▁veloc ities . ▁To ▁approach ▁the ▁speed ▁of ▁light , ▁and ▁therefore ▁to ▁pass ▁it , ▁an ▁object ▁would ▁have ▁to ▁be ▁acceler ated ▁through ▁an ▁infinite ▁potential , ▁an ▁impos s ibility ▁within ▁the ▁physical ▁universe . ▁The ▁acceleration ▁process ▁would ▁also ▁cause ▁the ▁object ▁to ▁have ▁infinite ▁mass , ▁which ▁is ▁not