I believe the answer is his return home ^^
Bring is used when something is being taken towards (to) the speaker, whereas carry is when something is transported by using hands, body, and/or strength. :)
Swan symbolizes grace and beauty on many levels of love, music, and poetry.
Scientists are searching for planets that are similar to Earth because when resources are used up, we can resort to another planet. Whether it be to travel to live at a different planet or to collect resources from there, either option would be nice for a last resort.