David John Eicher (born August 7, 1961) is an American editor, writer, and popularizer of astronomy and space.

He is author, coauthor, or editor of 23 books on science and American history and is known for having founded a magazine on astronomical observing, Deep Sky Monthly, when he was a 15-year-old high school student.

[2] In 1985, Kalmbach Publishing Co.,[3] the Milwaukee publisher of Model Railroader, Trains, and other titles, bought AstroMedia Corp. Eicher's role in the magazine deepened as he worked on many science stories as well as observing pieces and by decade's end, the company moved to Waukesha, Wisconsin, near Milwaukee, and by that time Eicher was promoted to associate editor.

[6] He was among the 2014 speakers at the Starmus Festival in Tenerife, Canary Islands,[7] 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.

[8] 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,[9] and in April 2018 delivered the Benson Memorial Lecture in Physics at Miami University in Oxford, Ohio.

Visitors from Deep Space[13] a book with Brian May of Queen fame, and astronomer Garik Israelian, constituting the conference proceedings, lectures, and information from the first Starmus Festival, a science and music event held in 2011 in the Canary Islands.

[18] An audio interview series, Superstars of Astronomy, features hour-long podcast talks with prominent astronomers, planetary scientists, and cosmologists, including Jeff Hester, Garik Israelian, Martin Rees, Seth Shostak, Debra Fischer, Sara Seager, Heidi Hammel, and others.

[21] Also in June 2017, Eicher attended and was a principal actor at the fourth Starmus Festival, which took place in Trondheim, Norway.