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Posted by James Nicoll on February 4, 2006, 10:30 am
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>ramiga wrote:
>> Why can't we scoop energy from space into our crafts to provide
>> propulsion. Space is full of energy!!!
>..Where is all this energy?
>> We need to think of a method of capturing all that energy in space to
>> fuel our craft, not just solar.
>What other energy is there in space? After sunlight/starlight, there's
>no energy of any significance (unless you want to play games with
>trading motion of a spacecraft for power in a planetary magnetic field,
>which is just another way of getting energy out of the spaceship's fuel
>tank.)
Don't forget gravity, which can be exploited with fly bys and
Oberth manuevers.
--
http://www.cic.gc.ca/english/immigrate/
http://www.livejournal.com/users/james_nicoll
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Posted by David McMillan on February 8, 2006, 9:56 am
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James Nicoll wrote:
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>>What other energy is there in space? After sunlight/starlight, there's
>>no energy of any significance (unless you want to play games with
>>trading motion of a spacecraft for power in a planetary magnetic field,
>>which is just another way of getting energy out of the spaceship's fuel
>>tank.)
>
> Don't forget gravity, which can be exploited with fly bys and
> Oberth manuevers.
Bbbbut! That energy isn't free! You STEAL IT from the PLANETS!
Why, the Voyager slingshots past Jupiter ROBBED that planet of nearly
1 bajillionth of its orbital speed! If we keep doing this, we will
PERMANENTLY ALTER the natural arrangement of the ENTIRE SOLAR
SYSTEM!!!!!!!!!
(sorry. I just had to channel my inner lunatic-fringe envirowhacko.
I'll try not to let it happen again.) :)
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Posted by James Nicoll on February 10, 2006, 11:26 am
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>James Nicoll wrote:
>>>What other energy is there in space? After sunlight/starlight, there's
>>>no energy of any significance (unless you want to play games with
>>>trading motion of a spacecraft for power in a planetary magnetic field,
>>>which is just another way of getting energy out of the spaceship's fuel
>>>tank.)
>>
>> Don't forget gravity, which can be exploited with fly bys and
>> Oberth manuevers.
> Bbbbut! That energy isn't free! You STEAL IT from the PLANETS!
>Why, the Voyager slingshots past Jupiter ROBBED that planet of nearly
>1 bajillionth of its orbital speed! If we keep doing this, we will
>PERMANENTLY ALTER the natural arrangement of the ENTIRE SOLAR
>SYSTEM!!!!!!!!!
> (sorry. I just had to channel my inner lunatic-fringe envirowhacko.
> I'll try not to let it happen again.) :)
You jest but in fact, I have seen at least one person object
to our reckless alteration of planetary orbits. Really.
--
http://www.cic.gc.ca/english/immigrate/
http://www.livejournal.com/users/james_nicoll
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Posted by Mike Combs on February 13, 2006, 1:53 pm
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> You jest but in fact, I have seen at least one person object
> to our reckless alteration of planetary orbits. Really.
Your story reminds me of one guy who told me I was an idiot to propose
mining asteroids in the Main Belt. He was convinced the Belt was the only
thing offering protection to the inner solar system from asteroidal
bombardment. I asked him to take a look at the moon with a pair of
binoculars to judge to what extent the inner system has been protected from
bombardment.
--
Regards,
Mike Combs
----------------------------------------------------------------------
By all that you hold dear on this good Earth
I bid you stand, Men of the West!
Aragorn
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Posted by David McMillan on March 15, 2006, 2:41 pm
Please log in for more thread options Mike Combs wrote:
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>
>>You jest but in fact, I have seen at least one person object
>>to our reckless alteration of planetary orbits. Really.
>
>
> Your story reminds me of one guy who told me I was an idiot to propose
> mining asteroids in the Main Belt. He was convinced the Belt was the only
> thing offering protection to the inner solar system from asteroidal
> bombardment. I asked him to take a look at the moon with a pair of
> binoculars to judge to what extent the inner system has been protected from
> bombardment.
Heck, several years ago there was an individual who posted an email
to the main Artemis Society listserv expressing his concerns that
their plan would destabilize Luna's orbit and send it crashing into
the Earth, 'all in the name of commercialism.' The worst part was,
judging from his proper spelling, grammar, punctuation, and general
use of langauge, this was not some uneducated crackpot, but someone
with a decent education and general level of intelligence. He wasn't
raving, either, just stating a concern that *he* seemed to take very
seriously indeed, regardless of how pathetically inane it would strike
anyone with even basic knowledge of the physics involved.
Perhaps even more regrettable was the fact that at least a few list
members allegedly proceeded to respond to him off-list in what
amounted to "j00 fr34k1n6 m0r0n" style.
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>> Why can't we scoop energy from space into our crafts to provide
>> propulsion. Space is full of energy!!!
>..Where is all this energy?
>> We need to think of a method of capturing all that energy in space to
>> fuel our craft, not just solar.
>What other energy is there in space? After sunlight/starlight, there's
>no energy of any significance (unless you want to play games with
>trading motion of a spacecraft for power in a planetary magnetic field,
>which is just another way of getting energy out of the spaceship's fuel
>tank.)