2020
- 1/28/20 Provo, UT
BYU Marriott Center, Forum - 3/11/20 West Des Moines IA
ciLive! (9:30am) - Other 2020 engagements postponed or cancelled due to COVID-19
2019
- January Regent Enrichment Series Featured Lecturer
- April NEAF 2019
- June STARMUS V Festival
- October Purdue University Ideas Festival
2018 Book Tour for Chasing New Horizons
- 5/1/18 Washington DC
Smithsonian National Air and Space Museum (1pm) - 5/1/18 Washington DC
Politics and Prose (7pm) - 5/2/18 Philadelphia PA
Free Library of Philadelphia (7:30pm; Joseph Fox Bookshop, livestream/podcast) - 5/4/18 (National Space Day) New York NY
Intrepid Sea, Air & Space Museum (7:30pm) Register in Advance - 5/5/18 New York NY
The Explorers Club (5pm; bookseller tbd) - 5/6/18 Bridgeport CT
Discovery Museum (6:00pm) - 5/7/18 Boston MA
Harvard Book Store (7pm) - 5/8/18 Boston MA
Museum of Science (7pm) - 5/10/18 Ann Arbor MI
Ann Arbor District Library (7pm; Literati Bookstore) - 5/11/18 Chicago IL
Adler Planetarium Monthly Members Night (6pm) - 5/12/18 Houston TX
Space Center Houston (7pm) - 5/14/18 San Francisco CA
California Academy of Sciences (7:30pm, ticketed) - 5/15/18 Los Altos Hills CA
Foothill College, Silicon Valley Astronomy Lect. Series (7pm) - 5/16/18 Los Angeles CA
Griffith Observatory (7:30pm livestream) - 5/17/18 Seattle WA
Town Hall at the Museum of Flight (7:30pm) - 5/19/18 Boulder CO
Boulder Bookstore (5pm) - 5/20/18 Denver CO
Tattered Cover (2pm) - 6/6/18 Flagstaff AZ
Bright Side Bookshop (Alan solo; 7pm) - 6/15/18 Tucson AZ
Antigone Books (Alan solo event, 7pm) - 6/22/18 Highlands Ranch CO
Douglas County Library (Alan solo; 7pm; Tattered Cover) - 8/28/18 Denver CO
Museum of Nature & Science (7pm; Tattered Cover; both)