As Earth says goodbye to 'mini-moon,' asteroid's possible lunar origin revealed USA TODAYEarth’s ‘mini moon’ may have been a chunk of our actual moon The Associated PressEarth's Second Moon Has Vanished, Scientists Say FuturismEarth's '2nd moon' escapes our planet's orbit today — will it ever return? Livescience.comEarth bids farewell to 'mini moon' asteroid set for return visit in 2055 Fox News