<div dir="ltr"><div dir="ltr"><div class="gmail_default" style="font-family:arial,helvetica,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif">On Fri, Apr 12, 2019 at 9:18 AM Tomaz Kristan <<a href="mailto:protokol2020@gmail.com">protokol2020@gmail.com</a>> wrote:</span><br></div></div><div class="gmail_quote"><div dir="ltr" class="gmail_attr"><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">></span>
<span style="font-size:large">Why is that important? Plenty of things can cause detectable gravitational lensing</span></blockquote><div><span style="font-size:large"><br></span></div><div><i style=""><span class="gmail_default" style="font-family:arial,helvetica,sans-serif">> </span>Because we MIGHT see a very enlarged star there. Like through a natural magnifying lens.</i></div></div></blockquote><div><br></div><div class="gmail_default" style=""><font face="arial, helvetica, sans-serif"></font><font size="4">The probability that the line from Earth to something as small as a star should just happen to pass super close to something as small as a Black Hole is extremely low. But there are lots of lines from Earth to something as large as a galaxy and there is a pretty good chance that one of them will pass close to something as large as another galaxy. That's why we've seen gravitational lensing of distant galaxies caused by nearer galaxies but have not seen the same thing in stars.</font></div><div class="gmail_default" style=""><font size="4"><br></font></div><div class="gmail_default" style=""><font size="4"> John K Clark</font></div><div> </div></div></div>