I'm wondering if there is a word to describe something that cannot be seen with the naked eye.
'Microscopic' is the first that springs to mind, but this has too many 'science-y' connotations.
It also implies that the subject is very very tiny, whereas I need a word to describe an object that might not be visible for any reason, for example, it's very far away or is obscured.
'Invisible' is not appropriate as it implies that the subject possesses some sort of magical powers...
Is there a word or short phrase to describe an object that cannot be seen with the naked eye - for whatever reason?