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<p>s/satellite/asteroid/ --dave</p>
<div class="moz-cite-prefix">On 11/3/22 14:11, Dave Collier-Brown
via Starlink wrote:<br>
</div>
<blockquote type="cite" cite="mid:af6f3a9c-4cf1-650d-8644-f9100aa6f400@indexexchange.com">
<p>I recommend sticking a long piece of conductor to the
satellite, rather than banging on it with spaceships (;-))<br>
</p>
<a class="moz-txt-link-freetext" href="https://www.researchgate.net/profile/Z-H-Zhu/publication/251422339_Deorbiting_Dynamics_of_Electrodynamic_Tether/links/5cd4446b299bf14d95849bc3/Deorbiting-Dynamics-of-Electrodynamic-Tether.pdf" moz-do-not-send="true">https://www.researchgate.net/profile/Z-H-Zhu/publication/251422339_Deorbiting_Dynamics_of_Electrodynamic_Tether/links/5cd4446b299bf14d95849bc3/Deorbiting-Dynamics-of-Electrodynamic-Tether.pdf</a>
<p>(From York, one of my local universities)</p>
<p>As for the starship, it should treat asteroids like mines, and
assume someone is trying to "sink" them.<br>
</p>
<p>--dave<br>
</p>
<div class="moz-cite-prefix">On 11/3/22 13:37, Bruce Perens via
Starlink wrote:<br>
</div>
<blockquote type="cite" cite="mid:CAK2MWOvKeqXgLN9dkKJcKU-XoCnofKCP4zBHWfeRPqMwjOWhOQ@mail.gmail.com">
<div dir="ltr">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.
<div><br>
</div>
<div>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.<br>
<div><br>
</div>
<div> Thanks</div>
<div><br>
</div>
<div> Bruce</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Nov 3, 2022 at 5:28
PM Dave Taht via Starlink <<a href="mailto:starlink@lists.bufferbloat.net" moz-do-not-send="true" class="moz-txt-link-freetext">starlink@lists.bufferbloat.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
So, what would happen if we hit one of these (3 new ones
discovered<br>
yesterday) with 50tons of starship, at 15 klicks per second?
[1]<br>
<br>
<a href="https://en.wikipedia.org/wiki/Atira_asteroid" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">https://en.wikipedia.org/wiki/Atira_asteroid</a><br>
<br>
the three new ones, discovered and announced a day or three
back:<br>
<br>
<a href="https://www.smithsonianmag.com/smart-news/three-near-earth-asteroids-were-hiding-in-the-suns-glare-180981055/" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">https://www.smithsonianmag.com/smart-news/three-near-earth-asteroids-were-hiding-in-the-suns-glare-180981055/</a><br>
<br>
(Atira class are rocks within earth orbit. They are very
hard to see,<br>
probably overly baked (low on volatiles), and get bright sun
all the<br>
time)<br>
<br>
[1] I'm very inspired by DART, but afraid to do the math for
this<br>
tonnage and speed. (anyone? there's a LOT of zeroes... ) I
have<br>
project ploughshare on my mind, except kinetic, and it's
less<br>
deflection on my mind than reducing a rubble pile to rubble,<br>
identifying the good pieces, and bringing them back.<br>
<br>
<br>
<br>
-- <br>
This song goes out to all the folk that thought Stadia would
work:<br>
<a href="https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz" rel="noreferrer" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">https://www.linkedin.com/posts/dtaht_the-mushroom-song-activity-6981366665607352320-FXtz</a><br>
Dave Täht CEO, TekLibre, LLC<br>
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<br clear="all">
<div><br>
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-- <br>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div dir="ltr">
<div>Bruce Perens K6BP</div>
</div>
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<pre class="moz-signature" cols="72">--
David Collier-Brown, | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
<a class="moz-txt-link-abbreviated moz-txt-link-freetext" href="mailto:dave.collier-brown@indexexchange.com" moz-do-not-send="true">dave.collier-brown@indexexchange.com</a> | -- Mark Twain</pre>
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<pre class="moz-signature" cols="72">--
David Collier-Brown, | Always do right. This will gratify
System Programmer and Author | some people and astonish the rest
<a class="moz-txt-link-abbreviated" href="mailto:dave.collier-brown@indexexchange.com">dave.collier-brown@indexexchange.com</a> | -- Mark Twain</pre>
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