<div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><span style="font-family:arial,sans-serif">On Sat, Sep 16, 2017 at 1:27 AM, spike </span><span dir="ltr" style="font-family:arial,sans-serif"><<a href="mailto:spike66@att.net" target="_blank">spike66@att.net</a>></span><span style="font-family:arial,sans-serif"> wrote:</span><br></div><div class="gmail_extra"><div class="gmail_quote"> <br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div lang="EN-US"><div class="gmail-m_7942940887571049831WordSection1"><p class="MsoNormal"><u></u><u></u></p><p class="MsoNormal"><u></u><u></u></p><p class="MsoNormal"></p><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​> ​</div>Those V-notch curves are just crazy.  Nothing I can even imagine does that to a star’s brightness.<p></p></div></div></blockquote><div><br></div><font size="4">How about<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​ ​</div>a screen of<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​ ​</div>microscopic dust particles<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​? That's what several astronomers (including </div>Tabetha Boyajian<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​ after whom Tabby's​ Star is named) just wrote in a peer reviewed </div></font><div class="gmail_default" style="font-size:large;font-family:arial,helvetica,sans-serif;display:inline">article in ​"</div><span style="font-size:large">Astrophysical Journal</span><div class="gmail_default" style="font-size:large;font-family:arial,helvetica,sans-serif;display:inline">​": </div></div><div class="gmail_quote"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline"><br></div></div><div class="gmail_quote"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​<a href="https://arxiv.org/pdf/1708.07556.pdf">https://arxiv.org/pdf/1708.07556.pdf</a></div><br></div><div class="gmail_quote"><br></div><div class="gmail_quote"><div class="gmail_default"><font face="arial, helvetica, sans-serif">​</font><font size="4">They closely examined the rate of dimming of the ultraviolet light and the infrared light and they found the rate of dimming between the two was significantly different; and a Dyson Sphere, completed or not, wouldn't do that. The only thing that would scatter light like that is lots and lots of microscopic dust.  Yes it's odd that a mature star like Tabby would have such a thick cloud of dust in orbit around it and nobody is quite sure why it's there, but whatever caused the dust it sure doesn't look like aliens are responsible for the dimming.<br><br> John K Clark</font></div></div><div class="gmail_quote"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif;display:inline">​</div><div> <br></div></div><div class="gmail_quote"><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div lang="EN-US"><div class="gmail-m_7942940887571049831WordSection1"><p class="MsoNormal"><u></u></p></div></div></blockquote></div></div></div>