The lyrics could be taken literally as (gasp!) relationship gone wrong, but since the title already spells it out, this is more likely about leaving earth literally. Perhaps talking of the human race being forced to abandon earth after having made it inhospitable for life. Incidentally, Arcadia Planitia is an area on Mars, so perhaps the song muses about Mars being terraformed in the future for the event when earth is no longer viable for life.
What a great song!
The lyrics could be taken literally as (gasp!) relationship gone wrong, but since the title already spells it out, this is more likely about leaving earth literally. Perhaps talking of the human race being forced to abandon earth after having made it inhospitable for life. Incidentally, Arcadia Planitia is an area on Mars, so perhaps the song muses about Mars being terraformed in the future for the event when earth is no longer viable for life.