Sputnik 1 - 1/2 buqsha

The successful launch of Sputnik 1 on October 4, 1957, officially inaugurated the Space Age. As the world's first artificial satellite, the polished metal sphere equipped with four radio antennas demonstrated the feasibility of orbital spaceflight and transmitted radio pulses back to Earth, fundamentally shifting global science, aerospace technology, and geopolitical history.

Also from the "Honouring Astronauts" (تكريماً لرجال الفضاء) commemorative set issued by the Yemen Arab Republic (الجمهورية العربية اليمنية), this release honors the breakthrough of artificial satellites, depicting a spherical orbital probe with extended antenna rods traversing outer space above Earth.