In this poem, Smith uses a meteor as a metaphor for the struggle to leave your beginnings and make something of yourself. Smith grew up in a small town in New Orleans and while he was better off than most, it was still an uphill battle to be able to leave.
He starts off by saying, "I heard that meteor showers are almost always named after, the constellation from which they originate." He goes on to explain how he thinks it's funny that even the universe is showing you that you can't get too far from the place that created you.
For Smith, just like for most black boys, getting away is supposed to be just that; they want to leave everything behind. Smith explains the things that they have to go through as the journey that the meteor has to take to get to Earth; "...enter a new atmosphere, become subsumed in flames, turn to dust, lose ourselves in the wind, and scatter the surface beneath us..."
Even after being turned to dust, there is still a part of home in that meteor just like even after the black boy has left his hometown and made a name for himself, there is apart of home that will never leave him.