Comments on: Gravity’s Oldest Puzzles https://briankoberlein.com/2015/09/28/gravitys-oldest-puzzles/ Brian Koberlein Tue, 19 Feb 2019 13:26:59 +0000 hourly 1 https://wordpress.org/?v=5.0.3 By: j0h https://briankoberlein.com/2015/09/28/gravitys-oldest-puzzles/#comment-3139 Mon, 12 Oct 2015 18:35:36 +0000 https://briankoberlein.com/?p=5295#comment-3139 Not meant as a comment. Just pointing you to an interresting writing by George Musser. I dont know any other easy way to share with you. Dont think you want to anyway with a non-academical-dude.

http://nautil.us/issue/29/scaling/the-case-for-fewer-dimensions

]]> By: Greg Roelofs https://briankoberlein.com/2015/09/28/gravitys-oldest-puzzles/#comment-3115 Tue, 29 Sep 2015 04:05:26 +0000 https://briankoberlein.com/?p=5295#comment-3115 Could passage through Earth’s magnetic field in various orientations account for the flyby anomaly? Presumably spacecraft are pretty conductive on the outside, so if there were an induced current that bled off excess charge at both ends of a boom (say) via some pointy artifact, you’d expect a small amount of force to be associated with it. I assume there are instruments that can detect a net buildup of charge, but are there any that would notice small currents traveling along the exterior?

The solar magnetic field far from any planet should be relatively easy to model and account for, but the precise shape of Earth’s along a fast-moving spacecraft trajectory would be much trickier. Or do all spacecraft carry magnetometers these days? (If magnetic braking were a serious concern, I suppose all of them would…)

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