Complex sentence: The first astronauts from Britain, South Korea, and Iran were women, while there was a two year delay in Russia from the first man in space on Vostok1 to the first woman in space on Vostok6.
Split into simpler sentences: The first astronauts from Britain, South Korea, and Iran were women. There was a difference of two years from the first man in space on Vostok1 to the first woman in space on Vostok6.