<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Times New Roman; font-size: 12pt; color: #000000'><span style="font-family: tahoma,new york,times,serif;"><span style="white-space:pre"> </span><span style="white-space:pre"> </span><span style="white-space:pre"> </span><span style="white-space:pre"> </span><strong>Public talk</strong><br><br>Dr. Andreas Faltenbacher a Postdoctoral Fellow at University of Western Cape will be giving a free public talk at S.A. Astronomical Observatory in Cape Town this Saturday, May 26 at 20h00. The title of his talk is </span><span style="font-style: italic; font-family: tahoma,new york,times,serif;">"The search for dark matter"</span><span style="font-family: tahoma,new york,times,serif;">. After the talk, there will be tours of the main building, the McClean Telescope and stargazing if the weather is good. </span><br style="font-family: tahoma,new york,times,serif;"><br style="font-family: tahoma,new york,times,serif;"><span style="font-weight: bold; font-family: tahoma,new york,times,serif;">Summary of the talk:</span><br style="font-family: tahoma,new york,times,serif;"><span style="font-family: tahoma,new york,times,serif;">The currently favoured cosmological standard model implies, more than 80% of all gravitational matter in the universe is invisible. However, up to today the basic properties of this 'dark matter' remain rather elusive.</span><br style="font-family: tahoma,new york,times,serif;"><span style="font-family: tahoma,new york,times,serif;">In his talk, Dr. Faltenbacher will address the following questions:</span><br style="font-family: tahoma,new york,times,serif;"><span style="font-family: tahoma,new york,times,serif;">1) Why do we need such a mysterious thing ?</span><br style="font-family: tahoma,new york,times,serif;"><span style="font-family: tahoma,new york,times,serif;">2) What dark matter candidates have been suggested ?</span><br style="font-family: tahoma,new york,times,serif;"><span style="font-family: tahoma,new york,times,serif;">3) Which dark matter candidates have already been excluded by current observations ?</span><br style="font-family: tahoma,new york,times,serif;"><br style="font-style: italic; font-weight: bold; font-family: tahoma,new york,times,serif;"><br style="font-family: tahoma,new york,times,serif;"><div style="font-family: tahoma,new york,times,serif;"><span name="x"></span>-- <br>Regards<br><br>Thembela Mantungwa<br>S.A. Astronomical Observatory<br>Tel: 021 460 9319<br>Fax: 086 612 7502<br>Email: tm@saao.ac.za<br>Website: www.saao.ac.za / www.salt.ac.za<br><span name="x"></span><br></div><br></div></body></html>