Visitors Now:
Total Visits:
Total Stories:
Profile image
Story Views

Last Hour:
Last 24 Hours:

A farewell to time travel?

Thursday, October 13, 2016 1:07
% of readers think this story is Fact. Add your two cents.

(Before It's News)

By Brian Clegg


I recently had pointed out to me that all my efforts in writing How To Build a Time Machine (aka Build Your Own Time Machine) were wasted because time travel is apparently impossible – at least according to this new theory which suggests that 'now' is defined by the extent of expansion of the universe and new time is only created with that expansion.

Thankfully, we don't need to worry too much. To begin with, the idea the theory presents of 'now' being defined by the state of expansion of the universe seems strangely detached from the fundamental idea in relativity that simultaneity is relative – the author seems to postulate a universal 'now' – which just doesn't exist.

And for that matter, it's a bit late to say that time travel isn't possible, because it is always happening on a small scale – relativity makes it inevitable. Tell the Voyager 1 probe, which has travelled over a second into the future that time travel isn't possible.

So even though the TARDIS or the Back to the Future DeLorean will certainly never work, there's no need to write off time travel.

Now Appearing is the blog of science writer Brian Clegg (, author of Inflight Science, Before the Big Bang and The God Effect.

Report abuse


Your Comments
Question   Razz  Sad   Evil  Exclaim  Smile  Redface  Biggrin  Surprised  Eek   Confused   Cool  LOL   Mad   Twisted  Rolleyes   Wink  Idea  Arrow  Neutral  Cry   Mr. Green

Top Stories
Recent Stories



Email this story
Email this story

If you really want to ban this commenter, please write down the reason:

If you really want to disable all recommended stories, click on OK button. After that, you will be redirect to your options page.