From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.lang.hm (syn-045-059-245-186.biz.spectrum.com [45.59.245.186]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id EE0383B29E for ; Mon, 17 Mar 2025 14:35:27 -0400 (EDT) Received: from [10.2.3.133] (unknown [10.2.3.133]) by mail.lang.hm (Postfix) with ESMTP id B45C81F6DDA; Mon, 17 Mar 2025 11:35:26 -0700 (PDT) Date: Mon, 17 Mar 2025 11:35:26 -0700 (PDT) From: David Lang To: "David Bray, PhD" cc: David Lang , "Douglas Goncz A.A.S. M.E.T. 1990" , "David Bray, PhD via Nnagain" In-Reply-To: Message-ID: <66sooq69-2pq1-3qq0-437s-pqq5o487s985@ynat.uz> References: <0C278F23-8CD8-49A8-94EB-90F5BA2B055F@gmx.de> MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="228850167-199254653-1742236526=:11254" 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 18:35:28 -0000 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --228850167-199254653-1742236526=:11254 Content-Type: text/plain; format=flowed; charset=UTF-8 Content-Transfer-Encoding: 8BIT David Bray wrote: > 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/ 'not that rare' is still along the lines of 12 oz of water per m^3 of rock yes there is a lot of rock, but it takes a lot of energy to extract the rock, heat it to extract the water, cool the water, and dispose of the rock. David Lang > Unfortunately we cancelled the VIPER effort > https://www.nasa.gov/news-release/nasa-ends-viper-project-continues-moon-exploration/ > ... and Athena crashed > https://www.yahoo.com/news/intuitive-machines-athena-space-craft-declared-dead-after-landing-sideways-in-a-crater-on-the-moon-153443232.html > > ... so stay tuned. > > > On Mon, Mar 17, 2025 at 1:03 PM 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 need >>> 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 that >> 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 >> > --228850167-199254653-1742236526=:11254--