On The Space Show for Wednesday, 23 July 2025:

A Cold War Handshake in Space — The 50th Anniversary of the Apollo-Soyuz Test Project:

* Apollo 7 astronaut, Walter Cunningham, shares his unique and candid perspective on the first international joint mission with America's Soviet adversaries.

* Terry Virts (@AstroTerry), another former NASA astronaut, shares his forthright reflections on training and working with his Russian counterparts on the International Space Station in more recent times.

10th Anniversary of the New Horizons flyby of Pluto:

Astrobiologist, Dr David Grinspoon, Senior Scientist at the Planetary Science Institute and NASA, reflecting on Pluto and the human imagination. A talk about Pluto and the New Horizons spacecraft that flew past the dwarf planet ten years ago. (Courtesy PSI)