<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="ltr"><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="ltr"></div><div dir="ltr"><div dir="ltr"><div dir="ltr"></div><div dir="ltr"></div><blockquote type="cite">On Dec 26, 2023, at 12:08 PM, Keith Henson via extropy-chat <extropy-chat@lists.extropy.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr">24 other blinking stars<br>in a cluster around Tabby's star</div></blockquote></div><div dir="ltr"><br></div><div dir="ltr">Keith, do you have an online reference for the 24 other objects detected? I can’t seem to find one. </div><div dir="ltr"><br></div><div dir="ltr">Last I read, large objects causing the dimming of Tabby’s star was ruled out aft<span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">er astronomers noticed the dimming was more pronounced in ultraviolet than infrared. Any object bigger than a dust grain would cause uniform dimming across all wavelengths, apparently.</span></div><p class="p2" style="margin: 0px; font-stretch: normal; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; min-height: 24px; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;"><span class="s1"></span><br></p><p class="p1" style="margin: 0px; font-stretch: normal; line-height: normal; font-size-adjust: none; font-kerning: auto; font-variant-alternates: normal; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-position: normal; font-feature-settings: normal; font-optical-sizing: auto; font-variation-settings: normal; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); -webkit-text-size-adjust: auto;">"This pretty much rules out the alien megastructure theory, as that could not explain the wavelength-dependent dimming," lead author Huan Meng of the University of Arizona <a href="https://www.nasa.gov/feature/jpl/mysterious-dimming-of-tabbys-star-may-be-caused-by-dust">said in a statement</a>. "We suspect, instead, there is a cloud of dust orbiting the star with a roughly 700-day orbital period."</p><div dir="ltr"><br></div><div dir="ltr">I’d love to learn the latest if you know more. </div><div dir="ltr"><br></div><div dir="ltr">Thanks</div><div dir="ltr">-Henry</div></div></div></div></body></html>