Analysis of information sources in references of the Wikipedia article "Time travel" in English language version.
{{cite book}}: |website= ignored (help){{cite book}}: |website= ignored (help)Spending just over two years in Mir's Earth orbit, going 17,500 miles per hour, put Sergei Avdeyev 1/50th of a second into the future ... 'he's the greatest time traveler we have so far.'
Spending just over two years in Mir's Earth orbit, going 17,500 miles per hour, put Sergei Avdeyev 1/50th of a second into the future ... 'he's the greatest time traveler we have so far.'