Re: [Starlink] Hitting an atira asteroid with a spacex starship?

[Dave Collier-Brown <dave.collier-Brown@indexexchange.com>]

[-- Attachment #1: Type: text/plain, Size: 4572 bytes --]

s/satellite/asteroid/ --dave

On 11/3/22 14:11, Dave Collier-Brown via Starlink wrote:
>
> I recommend sticking a long piece of conductor to the satellite, 
> rather than banging on it with spaceships (;-))
>
> https://www.researchgate.net/profile/Z-H-Zhu/publication/251422339_Deorbiting_Dynamics_of_Electrodynamic_Tether/links/5cd4446b299bf14d95849bc3/Deorbiting-Dynamics-of-Electrodynamic-Tether.pdf 
>
>
> (From York, one of my local universities)
>
> As for the starship, it should treat asteroids like mines, and assume 
> someone is trying to "sink" them.
>
> --dave
>
> On 11/3/22 13:37, Bruce Perens via Starlink wrote:
>> If you own a 50 ton spaceship, please do not intentionally hit any 
>> asteroids or other objects with it. What you get is smaller objects 
>> heading in different directions at different velocities, none of 
>> which are all that predictable, and in total more danger to objects 
>> in space than before and still significant danger to ground objects. 
>> What you want is to turn it harmless. This is done by gently 
>> attaching to it and then giving it a controlled push.
>>
>> I've been curious about what one could do over time just using the 
>> pressure of light from the ground, or enough light to 
>> gassify material to add delta V, however high power devices for this 
>> would also be effective weapons.
>>
>>     Thanks
>>
>>     Bruce
>>
>> On Thu, Nov 3, 2022 at 5:28 PM Dave Taht via Starlink 
>> <starlink@lists.bufferbloat.net> wrote:
>>
>>     So, what would happen if we hit one of these (3 new ones discovered
>>     yesterday) with 50tons of starship, at 15 klicks per second? [1]
>>
>>     https://en.wikipedia.org/wiki/Atira_asteroid
>>
>>     the three new ones, discovered and announced a day or three back:
>>
>>     https://www.smithsonianmag.com/smart-news/three-near-earth-asteroids-were-hiding-in-the-suns-glare-180981055/
>>
>>     (Atira class are rocks within earth orbit. They are very hard to see,
>>     probably overly baked (low on volatiles), and get bright sun all the
>>     time)
>>
>>     [1] I'm very inspired by DART, but afraid to do the math for this
>>     tonnage and speed. (anyone? there's a LOT of zeroes... ) I have
>>     project ploughshare on my mind, except kinetic, and it's less
>>     deflection on my mind than reducing a rubble pile to rubble,
>>     identifying the good pieces, and bringing them back.
>>
>>
>>
>>     -- 
>>     This song goes out to all the folk that thought Stadia would work:
>>     https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz
>>     Dave Täht CEO, TekLibre, LLC
>>     _______________________________________________
>>     Starlink mailing list
>>     Starlink@lists.bufferbloat.net
>>     https://lists.bufferbloat.net/listinfo/starlink
>>
>>
>>
>> -- 
>> Bruce Perens K6BP
>>
>> _______________________________________________
>> Starlink mailing list
>> Starlink@lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/starlink
> -- 
> David Collier-Brown,         | Always do right. This will gratify
> System Programmer and Author | some people and astonish the rest
> dave.collier-brown@indexexchange.com  |              -- Mark Twain
>
> */CONFIDENTIALITY NOTICE AND DISCLAIMER/*/ : This telecommunication, 
> including any and all attachments, contains confidential information 
> intended only for the person(s) to whom it is addressed. Any 
> dissemination, distribution, copying or disclosure is strictly 
> prohibited and is not a waiver of confidentiality. If you have 
> received this telecommunication in error, please notify the sender 
> immediately by return electronic mail and delete the message from your 
> inbox and deleted items folders. This telecommunication does not 
> constitute an express or implied agreement to conduct transactions by 
> electronic means, nor does it constitute a contract offer, a contract 
> amendment or an acceptance of a contract offer. Contract terms 
> contained in this telecommunication are subject to legal review and 
> the completion of formal documentation and are not binding until same 
> is confirmed in writing and has been signed by an authorized signatory./
>
>
> _______________________________________________
> Starlink mailing list
> Starlink@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/starlink

-- 
David Collier-Brown,         | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
dave.collier-brown@indexexchange.com  |              -- Mark Twain

[-- Attachment #2: Type: text/html, Size: 8845 bytes --]