This is the 12626th most frequent German word.
weltraum
Outer space.
Here, 'Weltraum' is used to refer to outer space, the vast expanse beyond Earth's atmosphere.
Der Weltraum birgt unzählige Geheimnisse.
Space holds countless secrets.
In this sentence, 'Weltraum' again denotes outer space, emphasizing the environment astronauts reach during missions.
Astronauten bereiten sich jahrelang vor, bevor sie den Weltraum betreten.
Astronauts prepare for years before they enter space.
Here, 'Weltraum' refers to the cosmos as the subject of astronomical studies and exploration.