Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.physics > #570604
| From | jimp@specsol.spam.sux.com |
|---|---|
| Newsgroups | sci.physics |
| Subject | Re: Stephen Hawking's Plan For Interstellar Travel Has Some Earthly Obstacles |
| Date | 2016-04-15 00:36 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <ulp5uc-816.ln1@mail.specsol.com> (permalink) |
| References | <TP-dnbjsifw5rY3KnZ2dnUU7-L8AAAAA@giganews.com> |
Sam Wormley <swormley1@gmail.com> wrote: > Stephen Hawking's Plan For Interstellar Travel Has Some Earthly Obstacles >> http://www.npr.org/sections/thetwo-way/2016/04/14/474227319/stephen-hawkings-plan-for-interstellar-travel-has-some-earthly-obstacles > > >> Houston, We Had A Problem ... Last Year >> >> Once the hundreds or thousands of probes leave our solar system, they >> would be on their own in more ways than one. Physics dictates that >> communications between Earth and the probes can't happen faster than >> the speed of light. That means if one of the probes runs into trouble >> a light year into its journey, then it will take a year for its >> distress call to reach home. It will take another year for mission >> control's instructions to reach the little craft. >> >> It's safe to say that in the two years it takes to get help, the >> probe will have either fixed itself or died. Assuming you have an antenna large enough to get any signal back, which so far is not in evidence. And it also means it is pointless to send any commands at all after a certain distance. -- Jim Pennino
Back to sci.physics | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Stephen Hawking's Plan For Interstellar Travel Has Some Earthly Obstacles Sam Wormley <swormley1@gmail.com> - 2016-04-14 19:07 -0500 Stephen Hawking's Plan For Interstellar Travel Has Some Earthly Obstacles HVAC <mr.hvac@gmail.com> - 2016-04-14 17:21 -0700 Re: Stephen Hawking's Plan For Interstellar Travel Has Some Earthly Obstacles jimp@specsol.spam.sux.com - 2016-04-15 00:36 +0000 Re: Stephen Hawking's Plan For Interstellar Travel Has Some Earthly Obstacles Double-A <double-a3@hush.com> - 2016-04-15 16:40 -0700
csiph-web