What is "Missions to and Sample" supposed to mean?
"Missions and Sample Returns to and from Nearby Interstellar Objects" is probably what I would have made from that, but no idea if that is allowed or comprehensible.
English is not my native tongue and I noticed that I don't understand capitalization as well as I thought. Why do you do that now? Just because it is a title? And why not for to/and/from? Are prepositions exempt?
So in expanded form:
"Missions to Nearby Interstellar Objects and Sample Returns from Nearby Interstellar Objects"
So "Collecting Samples from Nearby Interstellar Objects" would have been enough to do the job.