Changes

[[Early History#16th centuryCentury|1582]] – The Gregorian Calendar is introduced by Pope Gregory XIII. <br>[[19th Century|1883]] – The [[wikipedia:Orient Express|Orient Express]], a transcontinental railroad on [[Earth]], begins service between [[Paris]] and Istanbul. <br>[[1957]] – Launch of ''Sputnik I'', the first artificial [[satellite]] to [[orbit ]] the [[Earth]]. <br>[[1959]] – The Russian [[satellite ]] ''Luna 3 '' is launched, orbiting the [[Luna|Moon]] and photographing 70% of the Moon's far side.<br>