Translation guide
The vast expanse beyond Earth's atmosphere, where stars, planets, and galaxies exist. In Japanese, this concept is expressed through specific nouns and descriptive phrases.
Referring to the physical universe beyond Earth's atmosphere in a general or scientific context.
The most common and versatile word for 'outer space' or 'the universe'. Used in everyday conversation, news, and science.
There are many stars in outer space.
He is interested in outer space.
Literally 'cosmic space', a more technical term emphasizing the physical void of space. Common in scientific or formal contexts.
Experiments in outer space are difficult.
Literally 'great universe', a more poetic or philosophical term for the cosmos. Rare in everyday speech.
I ponder the mysteries of the great universe.
Talking about going to, being in, or exploring outer space.
Emphasizing the infinite, dark, or empty nature of outer space.
Means 'vast universe/space'. 広大 (vast) is commonly paired with 宇宙 to convey the immense scale.
Compared to the vastness of outer space, Earth is small.
Literally 'dark universe', evoking the darkness of outer space. Used in poetic or descriptive writing.
Stars shining in the dark outer space.
宇宙 (uchuu) refers to outer space beyond the atmosphere, while 空 (sora) means 'sky' (the air above us). Don't confuse them: 'I see stars in the sky' is 空に星が見える, but 'I want to explore outer space' is 宇宙を探検したい.
The sky is blue, but outer space is dark.