Re: How far is Jupiter?

From	Sylvia Else <sylvia@email.invalid>
Newsgroups	sci.physics, sci.physics.relativity, alt.astronomy
Subject	Re: How far is Jupiter?
Date	2019-02-09 11:22 +1100
Message-ID	<gc6kqnF48liU1@mid.individual.net> (permalink)
References	(2 earlier) <gc1gopF4veU1@mid.individual.net> <q3hukm$2n2$1@gioia.aioe.org> <q3icu0$4pe$1@gioia.aioe.org> <gc4jo4Fkt1fU1@mid.individual.net> <q3kg37$1crp$1@gioia.aioe.org>

Cross-posted to 3 groups.

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On 9/02/2019 5:00 am, benj wrote:
> On 2/8/2019 12:52 AM, Sylvia Else wrote:
>> On 8/02/2019 9:53 am, benj wrote:
>>
>>>> The laws of physics prevent man from freely traveling all over the
>>>> universe.
>>>
>>> Actually they don't, it's just that humans think they know all the 
>>> laws of physics but barely have a clue. Our government is aware of 
>>> this fact but it's classified.
>>>
>>
>> Even the speed achieved by a 1 g acceleration on a trip to Jupiter 
>> would far exceed solar escape velocity, and would be enough to get to 
>> the nearest star in a thousand years. If the galaxy were teeming with 
>> civilisations using such a technology for in-system travel, there 
>> would inevitably be accidents that lead to derelict craft with dead 
>> crew and passengers heading out into interstellar space. One might 
>> speculate on how long it would be before we spotted one crossing the 
>> solar system.
>>
>> Sylvia.
>>
> Aliens (of the intergalactic rather then central American type) do not 
> take 1000s of years to get here from distant stars. Your problem is the 
> age old "Indian" problem. It is this. When you have limited 
> understanding, you try to couch everything in terms that you feel you 
> understand. So the Indians see a UFO and their description is all about 
> Eagles, bears, tortoises and the like. In a way it's really a 
> description of truth but to a scientist it seems to make no science sense.
> 
> So you start with something you can understand like a one g acceleration
> And your "theory" goes nowhere from there. Can you even come up with a 
> plausible liberal fantasy of how one might exceed the speed of light to 
> travel? I don't think so.

It's easy to do - one just posits the existence of a FTL drive. Done.

Of course, we have no reason to think that such a thing is possible, and 
some fairly good reasons to think it is not. While it seems a shame to 
be trapped, for practical purposes, in our star system, it may be a 
blessing that we're thus protected from alien invasion, unless the 
aliens are willing to do it on a huge timescale.

Sylvia.

Thread

How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-05 09:54 -0800
  Re: How far is Jupiter? Steve Dodds <sdodds@nova-optical.com> - 2019-02-05 10:57 -0700
  Re: How far is Jupiter? "Sir Gregory Hall,  Esq." <greghall@yacht_maester.fake> - 2019-02-05 13:04 -0500
    Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-05 23:54 -0800
      Re: How far is Jupiter? "Sir Gregory Hall,  Esq." <greghall@yacht_maester.fake> - 2019-02-06 10:21 -0500
        Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-06 14:55 -0800
          Re: How far is Jupiter? "Sir Gregory Hall,  Esq." <greghall@yacht_maester.fake> - 2019-02-06 18:16 -0500
            Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-06 16:45 -0800
              Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-06 16:56 -0800
            Re: How far is Jupiter? djheydt@kithrup.com (Dorothy J Heydt) - 2019-02-07 02:09 +0000
              Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-06 20:48 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-07 10:13 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-09 15:06 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-10 00:22 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-10 22:29 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-11 10:04 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-11 10:44 -0800
                Re: How far is Jupiter? pnalsing@gmail.com - 2019-02-11 19:29 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-12 09:08 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-14 00:17 -0800
                Re: How far is Jupiter? The Starmaker <starmaker@ix.netcom.com> - 2019-02-12 08:50 -0800
              Re: How far is Jupiter? Serg Io <invvalid@invalid.com> - 2019-02-07 17:09 -0600
                Re: How far is Jupiter? % <persent@gmail.com> - 2019-02-07 16:12 -0700
                Re: How far is Jupiter? benj <benj.fake@gmail.com> - 2019-02-07 22:24 -0500
                Re: How far is Jupiter? Serg Io <invvalid@invalid.com> - 2019-02-08 07:39 -0600
    Re: How far is Jupiter? Sylvia Else <sylvia@email.invalid> - 2019-02-07 12:42 +1100
      Re: How far is Jupiter? Serg Io <invvalid@invalid.com> - 2019-02-07 12:49 -0600
        Re: How far is Jupiter? benj <benj.fake@gmail.com> - 2019-02-07 17:53 -0500
          Re: How far is Jupiter? Serg Io <invvalid@invalid.com> - 2019-02-07 17:07 -0600
          Re: How far is Jupiter? Sylvia Else <sylvia@email.invalid> - 2019-02-08 16:52 +1100
            Re: How far is Jupiter? benj <benj.fake@gmail.com> - 2019-02-08 13:00 -0500
              Re: How far is Jupiter? Sylvia Else <sylvia@email.invalid> - 2019-02-09 11:22 +1100
          Re: How far is Jupiter? "Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com> - 2019-02-07 22:08 -0800
            Re: How far is Jupiter? Serg Io <invvalid@invalid.com> - 2019-02-08 07:46 -0600
  Re: How far is Jupiter? sam.wormley@gmail.com - 2019-02-05 10:52 -0800
    Re: How far is Jupiter? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2019-02-05 19:57 +0100
      Re: How far is Jupiter? Serg Io <invvalid@invalid.com> - 2019-02-05 14:03 -0600
        Re: How far is Jupiter? "Sir Gregory Hall,  Esq." <greghall@yacht_maester.fake> - 2019-02-05 17:42 -0500
          Re: How far is Jupiter? % <persent@gmail.com> - 2019-02-05 15:51 -0700
          Re: How far is Jupiter? Serg Io <invvalid@invalid.com> - 2019-02-05 17:30 -0600
        Re: How far is Jupiter? Mahipal <mahipal7638@gmail.com> - 2019-02-05 14:52 -0800
  Re: How far is Jupiter? "Bast" <fakename@nomail.invalid> - 2019-02-05 15:08 -0500
  Re: How far is Jupiter? Whisper <beaver999@ozemail.com> - 2019-02-06 14:05 +1100
    Re: How far is Jupiter? "Sir Gregory Hall,  Esq." <greghall@yacht_maester.fake> - 2019-02-06 10:23 -0500
      Re: How far is Jupiter? Whisper <beaver999@ozemail.com> - 2019-02-07 09:34 +1100
        Re: How far is Jupiter? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2019-02-07 00:54 +0100
  Re: How far is Jupiter? mitchrae3323@gmail.com - 2019-02-09 18:46 -0800

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