Complex sentence: Astronauts and cosmonauts have observed their religions while in space, sometimes publicly, sometimes privately.Apollo 8 astronaut Frank Borman read from the Book of Genesis on Christmas Eve, 1968 as they orbited the moon.
Split into simpler sentences: Astronauts and cosmonauts have observed their religions while in space, sometimes publicly, sometimes privately. On Christmas Eve, 1968 astronaut Frank Borman read from the Book of Genesis as Apollo 8 orbited the moon.