Mission accomplished! Our commemorative stamp of the Atlantic Club of Bulgaria and “HELLO SPACE | Bulgaria Calling” has reached space on board the historic Axiom Mission 4! With over 30 years of visionary leadership, the Atlantic Club of Bulgaria has fostered a passion for innovation. This stamp represents a commitment to long-term goals, embracing the power of STEAM to equip young minds with the tools they need to shape the future and push the boundaries of space exploration. Here’s to future Nobel laureates, pioneering astronauts, and visionaries who will make Bulgaria proud!

This item flew into space aboard the SpaceX Dragon Grace, launching at 2:31 a.m. ET on Wednesday, June 25, 2025, from Launch Complex 39A at Kennedy Space Center in Florida. Commander Peggy Whitson, pilot Shubhanshu Shukla, and mission specialists Sławosz Uznański-Wiśniewski and Tibor Kapu formed the crew of the historic Ax-4 mission, the fourth private astronaut mission to the International Space Station.

The Ax-4 crew spent more than 20 days in space, orbiting the Earth 320 times at an altitude of 250 statute miles at over 17,000 miles per hour for about 8.4 million miles before splashing down on Tuesday, July 15, 2025 at 5:31 a.m. ET, off the west coast of San Diego.