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[quote=kalinka_vinnie]Oh, well then it

В таком контектсе open space тоже подходит.

Astronautes worked in open space for eight hours straight.

Космонавты проработали в открытом космосе восемь часов подряд.

Хм... Ну а как тогда по-английски сказать "открытый космос"?..[/quote:1f5kv65m]

Outer space :).

Open cosmos is a calque of the Russian expression. I don't think I have ever seen it in text written by native English speakers unless they are quoting a translation of a Russian work.

Outer space...