das Weltall
outer space
The entire space outside Earth with all stars, planets, and other celestial bodies; the cosmos.
Die Erforschung des Weltalls fasziniert die Menschheit seit jeher.
The exploration of outer space has always fascinated humanity.

outer space
Loading your saved state.
outer space
The entire space outside Earth with all stars, planets, and other celestial bodies; the cosmos.
Die Erforschung des Weltalls fasziniert die Menschheit seit jeher.
The exploration of outer space has always fascinated humanity.

'Weltall' (outer space) is a compound of 'Welt' (world) and 'All' (universe/space). The word 'All' is an old term for the cosmos or the universe. Literally, it therefore means something like 'world-universe.'
Astronauten reisen ins Weltall, um Planeten zu erforschen.
Astronauts travel into outer space to explore planets.
Pay attention to the prepositions and the case: movement into space is expressed with 'ins Weltall' (into outer space, accusative), while a state or location is described with 'im Weltall' (in outer space, dative).
Die Rakete fliegt ins Weltall.
The rocket is flying into outer space.
Common verbs used with 'Weltall' (outer space) are 'erforschen' (to explore), 'fliegen' (to fly), and 'reisen' (to travel). These describe typical activities connected with space.
Viele Wissenschaftler träumen davon, das Weltall zu erforschen.
Many scientists dream of exploring outer space.
sky / heaven
'der Himmel' and 'das Weltall' are both above or outside our immediate surroundings, but they do not mean the same thing. You use 'Himmel' when you look up from the earth and see clouds, the sun, the moon, or stars. 'Weltall' means the vast space outside the earth with planets, stars, and other celestial bodies. Learners may confuse the words because you can both see stars in the sky and find them in outer space. In everyday language about the weather or looking upward, 'Himmel' fits. In astronomy and space travel, 'Weltall' is more precise.

Im Museum lernen die Kinder viel über das Weltall und die Planeten.
At the museum, the children learn a lot about outer space and the planets.
Nach dem Regen ist der Himmel wieder blau.
After the rain, the sky is blue again.