Outer Space
Space, Universe
noun
The midair of outer space is the space that's in outer space which is outer space, space, and the universe!
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
私の彼は、宇宙一カッコいいです。
My guy is the coolest guy in the universe.
宇宙の果てには何があると思いますか。
What do you think there is at the end of universe?
宇宙人ガイドとの宇宙旅行はどうでしたか？
How was your space trip with the alien guide?