The selection of NASA Astronaut Group 24 (nicknamed The Platypi) was announced on March 5, 2024, alongside the graduation of the previous NASA astronaut class, NASA Astronaut Group 23. The group was announced on September 22, 2025.
NASA announced the creation of this astronaut group in March of 2024, and accepted applications for astronaut hires through April 16, 2024. On August 23, 2025, NASA released a statement that the new class would be announced at Johnson Space Center on September 22, 2025, and the event was subsequently live-streamed on that day.
The class nickname, the Platypi, was announced in March 2026. The prior astronaut class chose the name saying that the platypus was a fitting symbol of the group's range of skills and personalities.