<a href="https://en.wikipedia.org/wiki/Andy_Weir" class="extiw" title="w:Andy Weir">Andy Weir</a> made a special appearance during Mars Week 2015 at Johnson Space Center.
NASA/James Blair and Lauren Harnett
April 2015
<a rel="nofollow" class="external free" href="http://jscfeatures.jsc.nasa.gov/pages.ashx/236/The%20Martian%20author%20takes%20JSC%20by%20storm%20without%20the%20dust">http://jscfeatures.jsc.nasa.gov/pages.ashx/236/The%20Martian%20author%20takes%20JSC%20by%20storm%20without%20the%20dust</a>