Obituaries
- Nadine G. Barlow
- Michael I. Mishchenko (1959-2020)
- Margaret Burbidge (1919-2020)
- Franck Hersant (1977-2020)
- Jeffrey F. Bell (1955-2020)
- William Cassidy (1928-2020)
- Adam Showman (1968-2020)
- David R. Criswell (1941-2019)
- Jay T. Bergstralh (1943-2019)
- William (Bill) R. Ward (1944-2018)
- John Edward Westfall (1938-2018)
- Bradford A. Smith 1931-2018
- Michael J.S. Belton 1934-2018
- Von R. Eshleman 1924-2017
- Nathan Bridges 1966-2017
- Michel Combes 1939-2017
- Tobias C. Owen 1936-2017
- Akiva Bar-Nun 1940-2017
- Mark Allen 1949-2016
- Ewen Whitaker 1922-2016