<page_title> List of most massive stars </page_title> <section_title> List of the most massive stars </section_title> <table> <cell> R136a1 <col_header> Star name </col_header> </cell> <cell> 315 <col_header> Mass (M☉, Sun = 1) </col_header> </cell> </table>
R136a1 has the highest mass of 315 M☉.