Peggy Whitson was the first woman to time travel and this is how she did it - BBC

Subscribe and ? to OFFICIAL BBC YouTube ? https://bit.ly/2IXqEIn Stream original BBC programmes FIRST on BBC iPlayer ? https://bbc.in/2J18jYJ Time travel is not forbidden by the laws of nature, but to build a time machine, we would need to understand more about those laws and how to subvert them than we do now. And every day, science does learn more. Watch How to Build a Time Machine on the BBC: https://bbc.in/2zhdIJY How to Build a Time Machine | Horizon | BBC #bbc All our TV channels and S4C are available to watch live through BBC iPlayer, although some programmes may not be available to stream online due to rights. If you would like to read more on what types of programmes are available to watch live, check the 'Are all programmes that are broadcast available on BBC iPlayer?' FAQ ? https://bbc.in/2m8ks6v.