AFIRST
| Date | Clue |
|---|---|
| 2026-06-22 | Unprecedented |
| 2018-05-21 | What sending someone to Mars would be |
| 2016-11-22 | Something record-breaking |
| 2013-11-29 | Something groundbreaking |
| 2013-10-25 | It hasn't happened before |
| 2013-08-01 | Something groundbreaking |
| 2011-12-13 | "This is totally new!" |
| 2011-09-08 | Something new |
| 2010-04-04 | Something unprecedented |
| 2007-11-06 | Something new |
| 2004-03-05 | Something original |