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Maximum Space Travel Speeds



 
 
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  #1  
Old February 24th 21, 10:24 PM posted to alt.astronomy
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Posts: 537
Default Maximum Space Travel Speeds

All=20should=20note,=20that=20as=20speeds=20get=20 anywhere=20near=
=20light=20speed,=20kinetic=20energy=20goes=20to=2 0infinity.

That=20is,=20realistic=20speeds=20will=20be=20far, =20FAR=20less.

Our=20fastest=20space=20craft=20speed=20to=20date, =20is=20slower=
=20than=20light=20by=20a=20factor=20of=20over=2030 ,000=20!

So,=20our=20deep=20space=20probes=20will=20take=20 thousands=20of=
=20millennia=20to=20reach=20even=20our=20closest=2 0star=20neighbor=
s.=20I=20always=20knew=20they=20were=20a=20complet e=20waste=20of=
=20time,=20$=20and=20effort=20!


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  #2  
Old February 24th 21, 10:57 PM posted to alt.astronomy
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Posts: 537
Default Maximum Space Travel Speeds

Make=20that=20"many=20millennia",=20NOT=20"thousan ds=20of=20millen=
nia"


  #4  
Old February 25th 21, 02:49 PM posted to alt.astronomy
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Default Maximum Space Travel Speeds


But those of us who live IN THE REAL WORLD hope/believe otherwise!!
--



I just tell it like it obviously is.

So, in your "REAL WORLD", speeds of matter could approach or even exceed light speed ?

You'll have to explain that ...


  #5  
Old February 25th 21, 09:50 PM posted to alt.astronomy
palsing[_2_]
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Posts: 3,068
Default Maximum Space Travel Speeds

On Wednesday, February 24, 2021 at 10:41:53 PM UTC-8, Daniel65 wrote:
wrote on 25/2/21 9:24 am:
All should note, that as speeds get anywhere near light speed,
kinetic energy goes to infinity.

That is, realistic speeds will be far, FAR less.

Gee Whiz!! Anybody that is a regular reader on this newsgroup would have
no doubt that YOU think speeds of anything like the speed of light could
never be reached!

But those of us who live IN THE REAL WORLD hope/believe otherwise!!
--
Daniel


Go to this page...

http://hyperphysics.phy-astr.gsu.edu...iv/ltrans.html

.... and scroll down to the section called "Relativity Factor", where you find an online calculator where you can specify the rate of 'v' as a decimal of 'c'. Start with, for example, .99 and see what you get, then maybe (5) 9s then (10) 9s and finally use (1), meaning that v = c... and you will see that the answer is "infinity"... so NO, the smallest mass that you can imagine cannot attain a speed of c without requiring more energy than is contained in the entire known universe!
  #6  
Old February 26th 21, 12:51 AM posted to alt.astronomy
R Kym Horsell[_2_]
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Posts: 111
Default Maximum Space Travel Speeds

palsing wrote:
On Wednesday, February 24, 2021 at 10:41:53 PM UTC-8, Daniel65 wrote:
wrote on 25/2/21 9:24 am:
All should note, that as speeds get anywhere near light speed,
kinetic energy goes to infinity.
That is, realistic speeds will be far, FAR less.

Gee Whiz!! Anybody that is a regular reader on this newsgroup would have
no doubt that YOU think speeds of anything like the speed of light could
never be reached!
But those of us who live IN THE REAL WORLD hope/believe otherwise!!
--
Daniel

Go to this page...
http://hyperphysics.phy-astr.gsu.edu...iv/ltrans.html
... and scroll down to the section called "Relativity Factor", where you find an online calculator where you can specify the rate of 'v' as a decimal of 'c'. Start with, for example, .99 and see what you get, then maybe (5) 9s then (10) 9s and finally use (1), meaning that v = c... and you will see that the answer is "infinity"... so NO, the smallest mass that you can imagine cannot attain a speed of c without requiring more energy than is contained in the entire known universe!


The universe AFAWK started from a point, is 14 bn years old
yet has a diameter nr 100 bn LY:

The radius of the observable universe is therefore estimated to be about
46.5 billion light-years and its diameter about 28.5 gigaparsecs (93 billion
light-years, or 8.8?1026 metres or 2.89?1027 feet), which equals 880
yottametres.
Age: 13.799?0.021 billion years
Diameter: 8.8?1026 m or 880 Ym (28.5 Gpc or ...
Density (of total energy): 9.9?10-27 kg/m3 ...
-- wiki

Moral: Never mindlessly apply formulas.

  #7  
Old February 26th 21, 01:52 AM posted to alt.astronomy
palsing[_2_]
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Posts: 3,068
Default Maximum Space Travel Speeds

On Thursday, February 25, 2021 at 4:51:33 PM UTC-8, R Kym Horsell wrote:
palsing wrote:
On Wednesday, February 24, 2021 at 10:41:53 PM UTC-8, Daniel65 wrote:
wrote on 25/2/21 9:24 am:
All should note, that as speeds get anywhere near light speed,
kinetic energy goes to infinity.
That is, realistic speeds will be far, FAR less.
Gee Whiz!! Anybody that is a regular reader on this newsgroup would have
no doubt that YOU think speeds of anything like the speed of light could
never be reached!
But those of us who live IN THE REAL WORLD hope/believe otherwise!!
--
Daniel

Go to this page...
http://hyperphysics.phy-astr.gsu.edu...iv/ltrans.html
... and scroll down to the section called "Relativity Factor", where you find an online calculator where you can specify the rate of 'v' as a decimal of 'c'. Start with, for example, .99 and see what you get, then maybe (5) 9s then (10) 9s and finally use (1), meaning that v = c... and you will see that the answer is "infinity"... so NO, the smallest mass that you can imagine cannot attain a speed of c without requiring more energy than is contained in the entire known universe!

The universe AFAWK started from a point, is 14 bn years old
yet has a diameter nr 100 bn LY:

The radius of the observable universe is therefore estimated to be about
46.5 billion light-years and its diameter about 28.5 gigaparsecs (93 billion
light-years, or 8.8?1026 metres or 2.89?1027 feet), which equals 880
yottametres.
Age: 13.799?0.021 billion years
Diameter: 8.8?1026 m or 880 Ym (28.5 Gpc or ...
Density (of total energy): 9.9?10-27 kg/m3 ...
-- wiki

Moral: Never mindlessly apply formulas.


And yet... the formula nevertheless holds true!
  #8  
Old February 26th 21, 03:58 AM posted to alt.astronomy
R Kym Horsell[_2_]
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Posts: 111
Default Maximum Space Travel Speeds

palsing wrote:
On Thursday, February 25, 2021 at 4:51:33 PM UTC-8, R Kym Horsell wrote:
palsing wrote:
On Wednesday, February 24, 2021 at 10:41:53 PM UTC-8, Daniel65 wrote:
wrote on 25/2/21 9:24 am:
All should note, that as speeds get anywhere near light speed,
kinetic energy goes to infinity.
That is, realistic speeds will be far, FAR less.
Gee Whiz!! Anybody that is a regular reader on this newsgroup would have
no doubt that YOU think speeds of anything like the speed of light could
never be reached!
But those of us who live IN THE REAL WORLD hope/believe otherwise!!
--
Daniel
Go to this page...
http://hyperphysics.phy-astr.gsu.edu...iv/ltrans.html
... and scroll down to the section called "Relativity Factor", where you find an online calculator where you can specify the rate of 'v' as a decimal of 'c'. Start with, for example, .99 and see what you get, then maybe (5) 9s then (10) 9s and finally use (1), meaning that v = c... and you will see that the answer is "infinity"... so NO, the smallest mass that you can imagine cannot attain a speed of c without requiring more energy than is contained in the entire known universe!

The universe AFAWK started from a point, is 14 bn years old
yet has a diameter nr 100 bn LY:

The radius of the observable universe is therefore estimated to be about
46.5 billion light-years and its diameter about 28.5 gigaparsecs (93 billion
light-years, or 8.8?1026 metres or 2.89?1027 feet), which equals 880
yottametres.
Age: 13.799?0.021 billion years
Diameter: 8.8?1026 m or 880 Ym (28.5 Gpc or ...
Density (of total energy): 9.9?10-27 kg/m3 ...
-- wiki
Moral: Never mindlessly apply formulas.

And yet... the formula nevertheless holds true!


An infinite number of formulas hold true once in a while.

--
Q: Can you flick a laser pointer from the moon's N pole
to its S pole faster than 18 mS or does the beam break?

A: A spot of light or a shadow can travel over a surface
faster than the speed of light.

A spot of light can appear to travel at any speed. The Special Theory of
Relativity sets c (the speed of light in a vacuum) as the speed limit for
any physical object or packet of energy.
-- www.physlink.com/Education/Askexperts/ae497.cfm

Darkness Is Faster Than the Speed of Light
Discovery.com, 1 Aug 2019
Imagine you have a light that's powerful enough to reach the planet
Jupiter. Imagine also that it casts that beam in a cone that's broad
enough to cover the entire diameter of the planet. When you pass your
finger over the lens, the shadow will cross the entire diameter of the
planet ? a distance of 86,881 miles (139,821 kilometers). The speed of
light is 186,000 miles per second (299,338 kilometers per second). So
if it takes you less than half a second to move your hand that
distance, then that shadow will have "broken" the speed of light.
  #9  
Old February 26th 21, 09:42 AM posted to alt.astronomy
Daniel65
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Posts: 75
Default Maximum Space Travel Speeds

R Kym Horsell wrote on 26/2/21 11:51 am:
palsing wrote:
On Wednesday, February 24, 2021 at 10:41:53 PM UTC-8, Daniel65 wrote:
wrote on 25/2/21 9:24 am:
All should note, that as speeds get anywhere near light speed,
kinetic energy goes to infinity.
That is, realistic speeds will be far, FAR less.
Gee Whiz!! Anybody that is a regular reader on this newsgroup would have
no doubt that YOU think speeds of anything like the speed of light could
never be reached!
But those of us who live IN THE REAL WORLD hope/believe otherwise!!
--
Daniel

Go to this page...
http://hyperphysics.phy-astr.gsu.edu...iv/ltrans.html
... and scroll down to the section called "Relativity Factor", where you find an online calculator where you can specify the rate of 'v' as a decimal of 'c'. Start with, for example, .99 and see what you get, then maybe (5) 9s then (10) 9s and finally use (1), meaning that v = c... and you will see that the answer is "infinity"... so NO, the smallest mass that you can imagine cannot attain a speed of c without requiring more energy than is contained in the entire known universe!


The universe AFAWK started from a point, is 14 bn years old
yet has a diameter nr 100 bn LY:


Yeap!! But easily explained if the Speed of Light used to be much faster
than it currently is!!

You know how things tend to slow down as they get older??
--
Daniel
  #10  
Old February 26th 21, 02:28 PM posted to alt.astronomy
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Posts: 537
Default Maximum Space Travel Speeds

Obviously=20the=20Universe=20has=20no=20bounds=20o r=20limits=20in=
=20either=20time=20or=20space.

There=20will=20always=20be=20space=20beyond=20any= 20supposed=20bou=
ndary=20or=20limit.

There=20was=20always=20a=20yesterday=20and=20there =20will=20always=
=20be=20a=20tomorrow.

C'mon=20thinking=20people,=20it's=20just=20common= 20sense=20!


 




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