Obituaries
- Gordon Pettengill (1926-2021)
- Terrence Rettig (1946-2021)
- Carolyn Shoemaker (1929-2021)
- John W. (Jack) Salisbury (1934-2020)
- George Carruthers (1939 - 2020)
- Koichiro Tsuruda (1937-2020)
- Roger Jay Phillips (1940-2020)
- H.J. Melosh (1947-2020)
- John Caldwell (1949-2019)
- Nadine G. Barlow ( -2020)
- 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)