From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: mail.toke.dk; spf=pass smtp.mailfrom=; dkim=fail header.d=space.net header.i=@space.net; arc=none (Message is not ARC signed); dmarc=fail (Used From Domain Record) header.from=space.net policy.dmarc=none Received: from gatekeeper1-relay.space.net (gatekeeper1-relay.space.net [IPv6:2001:608:3:85::38]) by mail.toke.dk (Postfix) with ESMTPS id BEF729893C0 for ; Wed, 19 Nov 2025 19:32:43 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=space.net; i=@space.net; q=dns/txt; s=esa; t=1763577164; x=1795113164; h=date:from:to:cc:subject:message-id:references: mime-version:in-reply-to; bh=/gGI9NTp9V/avm6Cede3qv5R9qiCbaKu0xn/kUM1t+I=; b=cmw+mifW5eP4p7KUhuzy8hqB4y5ZGO5LiSv5vgviEEHS/iK+UHLB4hm8 sxyDq7jtbEQ+2V2jB4+ro6YM+B5rRN8lPv8Bv5FTbzH8w3bR2HrVrjZC5 KwFkSNB/QXXUkD30IOdecwHFeV4E2iVMlx6YWvdM5oTp2BXSRVbMAUo3G +zCx7xqzFxsQSCizg86GgRAs5HE9B1DL4BoiflFlgIJgydN6DPRCo2uux BM/e1AfrEAQuNNb9sxoAeGsmHhYNNtuPxV/5mBX3rrecxGOsX/mYRRwk2 dkYnjOOh5mqNpXLSHU0+qhszgQ4Mxxuwij1dZa9/CGDQ+PNEFUUeXz8ao A==; X-CSE-ConnectionGUID: ejOWp0ETS9OKDmNaz3I2yg== X-CSE-MsgGUID: P1ZdRoqASmmHV6HFPFv8eQ== X-SpaceNet-SBRS: None Received: from mobil.space.net ([195.30.115.67]) by gatekeeper1-relay.space.net with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Nov 2025 17:42:50 +0100 Received: from mobil.space.net (localhost [IPv6:::1]) by mobil.space.net (Postfix) with ESMTP id 9A4EA18186C2 for ; Wed, 19 Nov 2025 17:42:49 +0100 (CET) X-SpaceNet-Relay: true Received: from moebius6.space.net (moebius6.space.net [IPv6:2001:608:2:2::251]) by mobil.space.net (Postfix) with ESMTP id 8CFD718186C0; Wed, 19 Nov 2025 17:42:49 +0100 (CET) Received: by moebius6.space.net (Postfix, from userid 1007) id 8AC8253ABE; Wed, 19 Nov 2025 17:42:49 +0100 (CET) Date: Wed, 19 Nov 2025 17:42:49 +0100 From: Gert Doering To: J Pan Cc: Hesham ElBakoury , 5grm-satellite@ieee.org, Dave Taht via Starlink Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Message-ID-Hash: UW3ZNPHOY2IVOEP4U32RLGXIPU42X342 X-Message-ID-Hash: UW3ZNPHOY2IVOEP4U32RLGXIPU42X342 X-MailFrom: gert@space.net X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; loop; banned-address; emergency; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.10 Precedence: list Subject: [Starlink] Re: How Starcloud Is Bringing Data Centers to Outer Space | NVIDIA Blog List-Id: "Starlink has bufferbloat. Bad." Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: hi, On Wed, Nov 19, 2025 at 08:09:48AM -0800, J Pan via Starlink wrote: > not physical space, but energy harvesting and heat dissipating might > be more favorable in space. space itself can generate enough data to > be cranked there, instead of beaming down Physics suggest "heat dissipation is extremely hard in vacuum". Energy harvesting on the scales that these AI DCs need is also not exactly trivial - under ideal conditions a square m will see something like 1.3kW of influx energy. So for people talking about "gigawatts" of DC power, you'd need a square kilometer of solar collector, with good efficiency... Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard, Karin Schuler, Sebastian Cler Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279