If one was a writer of English one would write "Missions To, and Sample Returns From, Nearby Interstellar Objects." A mathematician or experienced computer pro

If one was a writer of English one would write "Missions To, and Sample Returns From, Nearby Interstellar Objects." A mathematician or experienced computer programmer would, of course, reach for parentheses instead of commas. A headline writer uses nothing. Brevity and attention capture are their goals, not clarity of content.