# If you were in a spaceship traveling... **URL:** \ **Category:** Factual Questions\ **Created:** [January 15, 2013, 11:05am UTC](https://boards.straightdope.com/t/if-you-were-in-a-spaceship-traveling/647270 "2013-01-15T11:05:24Z")\ **Posts on this page:** 4\ **Page:** 2
**Author:** ![Learjeff](https://avatars.discourse-cdn.com/v4/letter/l/94ad74/32.png) [@Learjeff](https://boards.straightdope.com/u/Learjeff)\ **Post date:** [January 18, 2013, 3:09am UTC](https://boards.straightdope.com/t/if-you-were-in-a-spaceship-traveling/647270/21 "2013-01-18T03:09:46Z")
There seems to be a typo for X: X = (0.9687) [cosh (1.032313T) 1] The " 1" is the odd bit. A little help, please? I’ve long forgotten my hyperbolics and can’t even imagine why they apply here. ---
**Author:** ![Asympotically\_fat](https://avatars.discourse-cdn.com/v4/letter/a/e47c2d/32.png) [@Asympotically\_fat](https://boards.straightdope.com/u/Asympotically_fat)\ **Post date:** [January 18, 2013, 3:13am UTC](https://boards.straightdope.com/t/if-you-were-in-a-spaceship-traveling/647270/22 "2013-01-18T03:13:25Z")
> [@Learjeff](#): > > There seems to be a typo for X: > > X = (0.9687) [cosh (1.032313T) 1] > > The " 1" is the odd bit. A little help, please? I’ve long forgotten my hyperbolics and can’t even imagine why they apply here. It should be “- 1”. ---
**Author:** ![Learjeff](https://avatars.discourse-cdn.com/v4/letter/l/94ad74/32.png) [@Learjeff](https://boards.straightdope.com/u/Learjeff)\ **Post date:** [January 18, 2013, 4:10pm UTC](https://boards.straightdope.com/t/if-you-were-in-a-spaceship-traveling/647270/23 "2013-01-18T16:10:27Z")
Thanks! Interesting. It looks like, if you can dedicate 43 years of your life and have a nearly inexhaustible supply of energy, you can reach anywhere in the observable universe. That’s using today’s size for the universe, though. Not sure how big it’ll be, 4B years from now. I’m also using 4B light years as the radius for the observable universe today, which might not be correct, but close enough for a dope post! 😉 ---
**Author:** ![Chronos](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/chronos/32/134_2.png) [@Chronos](https://boards.straightdope.com/u/Chronos)\ **Post date:** [January 18, 2013, 4:13pm UTC](https://boards.straightdope.com/t/if-you-were-in-a-spaceship-traveling/647270/24 "2013-01-18T16:13:52Z")
40 billion would be a lot closer, and even the naive estimate would give you more like 14 billion. [Previous page](https://boards.straightdope.com/t/if-you-were-in-a-spaceship-traveling/647270.md?page=1)