Eicher frequently travels to speak on astronomy or view solar eclipses with tour groups. In 2013 he was invited to speak about great advances in astronomy and on comets at Harvard University, in the Phillips Auditorium of Harvard College Observatory. He was among the 2014 speakers at the Starmus Festival in Tenerife, Canary Islands, and spoke at Harvard again in the spring of 2016, as well as delivering a public talk at Lowell Observatory, Flagstaff, Arizona, in November 2016. In 2017 he spoke at the Science + Mathematics Think-in at WVIZ-PBS ideastream in Cleveland, Ohio. He also spoke at the America's Darkest Sky Star Party at the Dark Sky New Mexico site near Animas, New Mexico in April 2017 and October 2017, and in April 2018 delivered the Benson Memorial Lecture in Physics at Miami University in Oxford, Ohio.