Who is younger Georgi Ivanov or Umberto Guidoni ?
Georgi Ivanov: Major general Georgi Ivanov Kakalov (Bulgarian: Георги Иванов Какалов ; born July 2, 1940) is a retired Bulgarian military officer and the first Bulgarian cosmonaut. Umberto Guidoni: Umberto Guidoni (born in Rome 18 August 1954) is an Italian astrophysicist, science writer and a former ESA astronaut, being the first European to visit the International Space Station.
Umberto Guidoni