If oxygen is released in space, what will it look like?
If oxygen is released into the space, what will it look like?
Do both of the above convey the same idea to you? Thanks.
Not to me they don't.
In the first 'space' the area between planets, stars, etc. and the oxygen is released from a point within that area. That is not from a point outside it.
In the second, on the other hand, 'space' is some empty area the speaker has been conversing about with the listener (for example the space between the inner and outer parts of a thermos flask) and in this case the oxygen enters the space in question from the outside.
Thanks, Horsa, for the helpful reply.
Just to make sure, is there any difference between "in" and "into" in the base sentence?
For me yes, the same difference holds true. Although, on occasions a casual speaker might use 'in' in place of 'into'. However, this seems to be an academic situation so for British English speakers,at least, it would be unlikely.
Yes. Although, I wouldn't worry too much about using it.