Re: How far is Jupiter?

From	"Chris M. Thomasson" <invalid_chris_thomasson_invalid@invalid.com>
Newsgroups	sci.physics, sci.physics.relativity, alt.astronomy
Subject	Re: How far is Jupiter?
Date	2019-02-07 22:08 -0800
Organization	Aioe.org NNTP Server
Message-ID	<q3j6dl$1dhr$1@gioia.aioe.org> (permalink)
References	<5C59CDCC.244C@ix.netcom.com> <iljj5ehd8ere6sa357ee7nueq9qpc735f1@4ax.com> <gc1gopF4veU1@mid.individual.net> <q3hukm$2n2$1@gioia.aioe.org> <q3icu0$4pe$1@gioia.aioe.org>

Cross-posted to 3 groups.

Show all headers | View raw

On 2/7/2019 2:53 PM, benj wrote:
> On 2/7/2019 1:49 PM, Serg Io wrote:
>> On 2/6/2019 7:42 PM, Sylvia Else wrote:
>>> On 6/02/2019 5:04 am, Sir Gregory Hall,  Esq. wrote:
>>>> On Tue, 05 Feb 2019 09:54:20 -0800, The Starmaker
>>>> <starmaker@ix.netcom.com> wrote:
>>>>> https://www.foxnews.com/science/harvard-prof-doesnt-back-down-from-claims-extraterrestrial-spacecraft-tech-is-flying-past-jupiter-orbit 
>>>>>
>>>>>
>>>>>
>>>>> i mean, if a flying saucer is near planet jupiter
>>>>> how long will it take to get here on Earth?
>>>>>
>>>>> this week or next week?
>>>>>
>>>>> i'm not sure how you figure these things out...
>>>>>
>>>>> I didn't go to ...Harvard.
>>>>
>>>> Time-wise, Jupiter is very far. Given that to
>>>> travel from Earth to Jupiter or vice versa, two
>>>> things must be considered. Acceleration and
>>>> declaration.  One thing that can't be left out
>>>> of the equation is how much force can the
>>>> organism or the ship handle. You don't want
>>>> either to get squashed.
>>>>
>>>> So, realistically, from a human's standpoint,
>>>> it would take years to travel from Jupiter
>>>> to Earth.
>>>>
>>>
>>> Jupiter's orbit averages about 5 AU which is also its average distance
>>> from Earth.
>>>
>>> 1 AU is about 150 million kilometers, or 1.5 * 10^11 metres. So 5 AU is
>>> about 7.5 * 10^11 metres. Call that s.
>>>
>>> Suppose the space ship accelerates at 1g (call that 10m/s^s, and let it
>>> be a) for half the time, and decelerates at 1g for the other half. Let t
>>> be the time the whole journey.
>>>
>>>      s/2 = 1/2 * a * (t/2)^2
>>>
>>>      t/2 = sqrt(s/2 / (1/2 * a))
>>>
>>>      t/2 = sqrt(s / a)
>>>
>>>      t = 2 * sqrt(s / a)
>>>
>>> Substituting for the terms, gives t = 2 * sqrt(10^11 / 10), or 2 * 10^5
>>> seconds, or about 55 hours.
>>>
>>> The top speed reached is 10^6 metres per second, or 36 million
>>> kilometres per hour, so the orbital speeds of Jupiter and the Earth are
>>> negligible, as are relativistic effects. The course taken would be
>>> pretty much a straight line.
>>>
>>> Zipping about the solar system would be quite practical if we could
>>> maintain 1g over an entire journey. Only we can't, and there's no
>>> realistic prospect of being able to do so.
>>>
>>> Sylvia.
>>>
>>
>> one can also limit/bound the problem of how far you can go, and # of
>> turns you can make, in traveling in space by fuel mass.  It also bounds
>> accelleration time.
>>
>> one 90 degree turn, and you blew it, you have to start over, unless you
>> use a planets gravity, or a stars gravity field to change direction.
>>
>>         momentium vector
>>
>> so starship enterprize is total science fiction, and has warped peoples
>> views.
> 
> Warp drive is REAL. Odd can tell you that much.

Cool man! Fwiw, in a fantasy land, here is a "ship" that just popped out 
of a highly experimental vector field of mine:

https://plus.google.com/101799841244447089430/posts/5DVrgoPz49K

Here is some of my online code that you can run for yourself that oddly 
shows little disc ship like things, strange:

http://funwithfractals.atspace.cc/ct_gf_explore/ct_alien_ship.html

Keep in mind that the image on that page is dynamically generated by the 
code. Just look at the source in the page. Fwiw, the rendering should 
look like:

https://plus.google.com/101799841244447089430/posts/KjXQZ97Z1R9

Here is another ship:

https://plus.google.com/101799841244447089430/posts/YHJA9THHr2H

Math is really fun to play around with.

> 
>> 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.
> 
>

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

csiph-web