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Scott Manley made a video about it very recently<br>
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<a class="moz-txt-link-freetext" href="https://www.youtube.com/watch?v=KibT-PEMHUU">https://www.youtube.com/watch?v=KibT-PEMHUU</a><br>
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<div class="moz-cite-prefix">On 08/23/2018 03:59 AM, Dan TheBookMan
wrote:<br>
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cite="mid:D63C56F0-BA3F-40F7-8EA2-5E3158FD91BF@gmail.com">
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<a
href="http://esmats.eu/esmatspapers/pastpapers/pdfs/2017/bialke.pdf"
moz-do-not-send="true">http://esmats.eu/esmatspapers/pastpapers/pdfs/2017/bialke.pdf</a>
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<div>One explanation though would be hard to confirm unless and
until some of these spacecraft might be recovered.... Or might
it be possible to put a platform with metal reaction wheels on a
loopy orbit, wait for a few solar even to occur, then recover it
(when it loops back in) and examine the bearings?<br>
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<div style="line-height: normal;"><span style="line-height:
20px; background-color: rgba(255, 255, 255, 0);">Regards,</span></div>
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20px; background-color: rgba(255, 255, 255, 0);"><br>
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