Soyuz MS-25 FLOWN ISS cover - signed by 11 astronauts + cosmonauts

Flown ISS Cover – Soyuz MS-25 Undocking (September 23, 2024)

Signed by 11 ISS Crew Members | Commemorates Oleg Kononenko's Record-Breaking Mission

This exceptional space-flown cover was carried aboard the International Space Station (ISS) and canceled on September 23, 2024, to mark the undocking of Soyuz MS-25—a mission that coincided with the completion of Russian cosmonaut Oleg Kononenko’s record-breaking spaceflight.

Signed by 11 of the 13 astronauts and cosmonauts aboard the ISS that day, this cover represents a remarkable moment in human spaceflight history and is an ultra-rare artifact of international collaboration and endurance in space.

Key Features:

• Official flown cover, canceled aboard the ISS on September 23, 2024

• Commemorates the undocking of Soyuz MS-25

• Honors the completion of Oleg Kononenko’s historic mission, which set a new cumulative time-in-space record

• Signed by 11 crew members who were aboard the ISS on that date:

  • Tracy Caldwell Dyson (NASA)

  • Barry Wilmore (NASA)

  • Sunita Williams (NASA)

  • Matthew Dominick (NASA)

  • Michael Barratt (NASA)

  • Jeanette Epps (NASA)

  • Alexander Grebenkin (Roscosmos)

  • Aleksey Ovchinin (Roscosmos)

  • Ivan Vagner (Roscosmos)

  • Donald Pettit (NASA)

  • [Missing from signature list: Oleg Kononenko and one other crew member]