| 2026-08-03 | Cosmic cloud |
| 2026-03-16 | Galactic cloud |
| 2024-03-04 | Cloud in outer space |
| 2023-06-14 | Annual award presented by the Science Fiction and Fantasy Writers of America |
| 2022-02-05 | Crab ___ |
| 2020-09-02 | ___ Awards (annual prizes for science fiction and fantasy) |
| 2019-01-13 | Annual science fiction award |
| 2016-06-28 | Cloud in space |
| 2014-03-01 | Hubble sighting |
| 2012-09-27 | Orion ___ |
| 2011-11-07 | Part of a galaxy |
| 2008-03-14 | Interstellar matter |
| 2007-12-16 | Cloud of gas and dust |
| 2007-01-14 | Distant cloud |
| 2005-07-09 | Sci-fi author's award |
| 2003-10-26 | Observatory sighting |
| 2002-04-07 | Crab ___ |
| 2000-06-15 | Astronomer's sighting |
| 1998-01-26 | Interstellar cloud |
| 1997-03-23 | Spiral ___ |
| 1994-10-02 | Mount Palomar sighting |