From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ed1-x532.google.com (mail-ed1-x532.google.com [IPv6:2a00:1450:4864:20::532]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id DD70C3B2A4 for ; Thu, 3 Nov 2022 13:37:39 -0400 (EDT) Received: by mail-ed1-x532.google.com with SMTP id a67so4122850edf.12 for ; Thu, 03 Nov 2022 10:37:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=perens.com; s=google; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=0QYhd5dWkBqrK5coEcz8+ZvGzK3h0F/DN/r7GbluLFI=; b=JbnGOl2xf6iGYfSF+/CNpK/rMnGCcGB3gdKFixL+Flt3JMMIpYavKcUjPuF4FNuJv0 hS4tUx6TGyYOe25SPpED9ZETwLIGyPftMMfzqz/QN9qiHd2WflG7uENRVeiazoS8RCtP CPi9vAoUtQGM20L37K3JCAP8F2DvY0JswwjSc= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=0QYhd5dWkBqrK5coEcz8+ZvGzK3h0F/DN/r7GbluLFI=; b=gMKf40QM15g9Td4SqfPF1EbNjULPP0SoDuGIMfMGB14CXZCYSHZ0ew+rooRZoyoVp8 I4KpfTwhRnG2cRV83CRLUlMMSMksH7SRf4MtPpAXwKdduTCy+JKNc/CEPkpgk9VtiPpG UIvpmXpZYL7J/adB3rMh26YijDiuunUaJJ8rODAPowjZ8VF9W0TJScvdKvE6LAgPSA5B i3jK6vFn4ZsO39aXInhdCfsaWiRAxA9eloJZelUwIW06pr2yfR6KcQzYLRp/CWsr5iSP 6e/E1JiweVAGzuFo4azBB9e0rFlMU2ehM0cv/JHZu5sEP4ccEa5GdqoWQfr1ac6kRrq+ DEog== X-Gm-Message-State: ACrzQf0dtJIg26C7g9awf7+fgOK6Tv0YHNLZCo0+OlkZwDKexzyc2ESG O+YG8ejaEbplIanGsrtaLNm/57rbxBV9QlYpgd7Lrq7DOLXAqQ== X-Google-Smtp-Source: AMsMyM5wzFCw6ctlZ3IgY09+95hKvmytmi+XmU9QOKfMm9zGQiggJR8q/QbTXrhTsimaYG5Bq98Lw8pQpL4LCnvZrFY= X-Received: by 2002:a05:6402:40d0:b0:462:7b99:d424 with SMTP id z16-20020a05640240d000b004627b99d424mr31016841edb.62.1667497058611; Thu, 03 Nov 2022 10:37:38 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Bruce Perens Date: Thu, 3 Nov 2022 17:37:27 +0000 Message-ID: To: Dave Taht Cc: Dave Taht via Starlink Content-Type: multipart/alternative; boundary="000000000000d7c43805ec946970" Subject: Re: [Starlink] Hitting an atira asteroid with a spacex starship? X-BeenThere: starlink@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Starlink has bufferbloat. Bad." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Nov 2022 17:37:40 -0000 --000000000000d7c43805ec946970 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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-698136666= 5607352320-FXtz > Dave T=C3=A4ht CEO, TekLibre, LLC > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink > --=20 Bruce Perens K6BP --000000000000d7c43805ec946970 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
If you own a 50 ton spaceship, please do not intentionally= hit any asteroids or other objects with it. What you get is smaller object= s heading in different directions at different velocities, none of which ar= e all that predictable,=C2=A0and in total more danger to objects in space t= han 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 givin= g it a controlled push.

I've been curious about what= one could do over time just using the pressure of light from the ground,= =C2=A0or enough light to gassify=C2=A0material to add delta V, however high= power devices for this would also be effective weapons.

=
=C2=A0 =C2=A0 Thanks

=C2=A0 =C2=A0 Bruce

On Thu, Nov 3, 2022 at 5:28 PM Dave Taht via Starlink <starlink@lists.bufferbloat.net&= gt; wrote:
So, w= hat 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-asteroi= ds-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-FXt= z
Dave T=C3=A4ht CEO, TekLibre, LLC
_______________________________________________
Starlink mailing list
Starlin= k@lists.bufferbloat.net
https://lists.bufferbloat.net/listinfo/starlink


--
Bruce Per= ens K6BP
--000000000000d7c43805ec946970--