AP Columbae
... that AP Columbae, the closest young star known, formed after the dinosaurs became extinct?
... that <b id="mwB2I"><a href="./AP_Columbae" id="mwB2M" rel="mw:WikiLink" title="AP Columbae">AP Columbae</a></b>, the closest <a href="./Pre-main-sequence_star" id="mwB2Q" rel="mw:WikiLink" title="Pre-main-sequence star">young star</a> known, formed after the dinosaurs became extinct?