From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ej1-x62d.google.com (mail-ej1-x62d.google.com [IPv6:2a00:1450:4864:20::62d]) (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 1D6B33B29E for ; Mon, 17 Mar 2025 14:25:39 -0400 (EDT) Received: by mail-ej1-x62d.google.com with SMTP id a640c23a62f3a-ac298c8fa50so900732066b.1 for ; Mon, 17 Mar 2025 11:25:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1742235938; x=1742840738; darn=lists.bufferbloat.net; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date:message-id:reply-to; bh=iOT93dqEfkGKAF++DXnPGr+aWrO+tj9/VZXcRn9/HV4=; b=An6MrMCMNrwIFtjs/6NQhHlbv1i9Mhdn4BQGBFcfqSLpmkU3P+R1Bj8VHu3nn1IGYB qQ/DxtUUGg6Lf32GEUltQId0p+kzq/IYTqC1G0/k/+TbJJgrHWoCmIdLz6/RGInJket5 wtBlDyjwUrUBnUIbxQxj645WkEozM1jIK7PHtVnUQw8Lz7eO+F+K7SlZ2N/kyllSZwza oiRdHy1HZ+Wcy1lPiFZRsP+AUJwTDBXzfpbvXUhu73EtJTrkcU3MWxFtHkWsWGh+8c9g RXT7HLHNHvnnbzyLMN5z/5n//dIZA1AXCDJzPA9iOZ3L1loMIZYOUHGo35WRz3hJ2ks8 eUYQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742235938; x=1742840738; 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=iOT93dqEfkGKAF++DXnPGr+aWrO+tj9/VZXcRn9/HV4=; b=Ds9u9H0jWA+qAHRQNkeWxdeAqJSbzDCyXbu8q7RV0g0PH5UFP9SWQTb2fPPG3EeNNo NVAxFTN+y54ZOHp3VuSw05Oq8wvthAm1vbt/T6iUACMjxGxRhIVK3VkfkKFS5AMU+/2+ TtQCS/1dL6r8302sz+Mdfy4K3k03I3doZEXbrWFBbPWogj97erveWwRHgZf1b82GcLKu eDrdF8ossBnawI8TwrACpsuo4hM5/Hg6OLoSr0lvgcxZr3bGWGFjSuts9zUaaOUf7a8C 0uNnO7Acm0FX2uKHtXXNRpllOKb8AlgEgvbqpupsd/I6tKnHV03dniC0bEDQLQJMNygE oXnw== X-Gm-Message-State: AOJu0Yz2uRFjIfNyhgSmUiee9KwNAkIyZS+1mKFd9Yl5DDUg9fiyyAF7 WHdLG4apEX/4f254kOSgEvjq1vji2uwo85wr+qyjeylsNVhqhvA5BueytORZIVH5fcYpPsxwMIQ KmQITXMB3ZRhODcbG1p1OOnwR94BoEKNSbmI= X-Gm-Gg: ASbGnctXiWOVp0n80VR12iKhDgb8i5RtSqP6BnDJD1heriV8dDSxRfstdnjLFOtcnNr mNxYHyHOwqYwmsQZF8no9r/KBcntVXQnJb5z/xuAUUC4s4aZg7gg5cimONwzs0e/gVqAwvzYH3A q5N8qkXQfjC7cikg/Up6Zoj5DfHtvuZF/6+JGK X-Google-Smtp-Source: AGHT+IH2ZcspO7Sbdk3usg3nCaaxc24XHDhcJUlOrzjQfQ0Z8FX69YEMArr6etDTM1fJXrzHZv3KHucX2qMXvY7ubdY= X-Received: by 2002:a17:907:7f17:b0:ac2:cf0b:b806 with SMTP id a640c23a62f3a-ac3304e98c4mr1298504566b.56.1742235937656; Mon, 17 Mar 2025 11:25:37 -0700 (PDT) MIME-Version: 1.0 References: <0C278F23-8CD8-49A8-94EB-90F5BA2B055F@gmx.de> In-Reply-To: From: "David Bray, PhD" Date: Mon, 17 Mar 2025 14:25:01 -0400 X-Gm-Features: AQ5f1JpvqSMhiya8IAdTCkj8r9sSADelgs-MZ394NwxTJJfHYugOtJM77yCrukY Message-ID: To: David Lang , "Douglas Goncz A.A.S. M.E.T. 1990" Cc: "David Bray, PhD via Nnagain" Content-Type: multipart/alternative; boundary="0000000000002dd8b706308deaa5" Subject: Re: [NNagain] Hurling rocks into Earth's gravity well X-BeenThere: nnagain@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: =?utf-8?q?Network_Neutrality_is_back!_Let=C2=B4s_make_the_technical_aspects_heard_this_time!?= List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 17 Mar 2025 18:25:39 -0000 --0000000000002dd8b706308deaa5 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable The latest missions suggest water is all over the Moon and not that rare - https://dailygalaxy.com/2024/09/scientists-confirm-water-all-over-the-moon/ Unfortunately we cancelled the VIPER effort https://www.nasa.gov/news-release/nasa-ends-viper-project-continues-moon-ex= ploration/ ... and Athena crashed https://www.yahoo.com/news/intuitive-machines-athena-space-craft-declared-d= ead-after-landing-sideways-in-a-crater-on-the-moon-153443232.html ... so stay tuned. On Mon, Mar 17, 2025 at 1:03=E2=80=AFPM David Lang wrote: > David Bray wrote: > > > I'd go for burning hydrogen - not hydrogen fusion - if we can extract > water > > from the Moon with solar power as the initial kick-starter. We will nee= d > > the hydrogen for future rockets launched from the Moon's lower gravity = to > > Mars and beyond too... > > I think water is better used for people than for burning. There isn't tha= t > much > of it out there. > > There are times you need the high thrust, but if you can use electricity > instead, it's better in the long run (and on the moon, with 14 day > 'nights' I > think nuclear will win > > burning hycrogen may be needed for landings and maneuvering, but use > magnetics > for launching. > > David Lang_______________________________________________ > Nnagain mailing list > Nnagain@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/nnagain > --0000000000002dd8b706308deaa5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
On Mon, Mar 17, 2025 at 1:03=E2=80=AFPM D= avid Lang <david@lang.hm> wrote:=
David Bray wrot= e:

> I'd go for burning hydrogen - not hydrogen fusion - if we can extr= act water
> from the Moon with solar power as the initial kick-starter. We will ne= ed
> the hydrogen for future rockets launched from the Moon's lower gra= vity to
> Mars and beyond too...

I think water is better used for people than for burning. There isn't t= hat much
of it out there.

There are times you need the high thrust, but if you can use electricity instead, it's better in the long run (and on the moon, with 14 day '= ;nights' I
think nuclear will win

burning hycrogen may be needed for landings and maneuvering, but use magnet= ics
for launching.

David Lang_______________________________________________
Nnagain mailing list
Nnagain@= lists.bufferbloat.net
https://lists.bufferbloat.net/listinfo/nnagain
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