| 2025-06-09 | Niels ___, physicist portrayed by Kenneth Branagh in "Oppenheimer" |
| 2023-06-22 | Pioneer in atomic theory |
| 2022-08-19 | See 25-Down |
| 2021-04-08 | Physics Nobelist who developed an early model of the atom |
| 2019-10-15 | Physics Nobelist Niels |
| 2018-10-01 | Physics Nobelist Niels |
| 2016-10-02 | Physicist who said "Anyone who is not shocked by quantum theory has not understood it" |
| 2016-03-11 | 1922 Physics Nobelist |
| 2014-11-10 | Physics Nobelist Niels |
| 2014-09-26 | 1920s-'30s debate opponent of Einstein |
| 2012-07-22 | Danish Nobelist |
| 2012-06-15 | Nobelist name of 1922 and 1975 |
| 2011-11-24 | Nobelist Niels |
| 2011-08-31 | 1922 Physics Nobelist |
| 2011-05-31 | Nobelist Niels |
| 2010-11-21 | Atom modeler |
| 2010-05-30 | 1922 Physics Nobelist |
| 2008-04-13 | Nobel physicist Niels |
| 2007-04-22 | Physicist Niels |
| 2007-03-25 | Nobelist Niels |
| 2006-12-18 | Danish Nobelist Niels |
| 2006-05-21 | Physicist with an element named after him |
| 2005-12-28 | 1922 Physics Nobelist |
| 2004-10-27 | Physicist Niels |
| 2003-12-31 | 1922 Physics Nobelist |
| 2003-07-16 | Danish physicist Niels |
| 2003-03-23 | Noted Los Alamos scientist |
| 2002-12-30 | Physicist Niels |
| 2002-10-30 | 1922 Nobelist in physics |
| 2002-01-31 | Pioneer in quantum theory |
| 2001-06-10 | Nuclear theorist Niels |
| 2001-05-20 | 1922 Physics Nobelist |
| 2000-06-29 | ___ theory, in physics |
| 1999-10-06 | Physicist Niels |
| 1999-06-28 | Physics Nobelist Niels |
| 1995-04-23 | 1922 Physics Nobelist |
| 1994-10-20 | Planck contemporary |
| 1994-03-06 | Physicist Niels |
| 1994-01-17 | Physicist Niels |