... English (Ireland) . ... Science User Portal . ... ESO, the European Southern Observatory . ... Survey Telescopes . ... Star Clusters . ... Video News Releases . ... Stars@ESO . ... With a temperature of about 3 000 degrees (about half as hot as the Sun) and a luminosity about one thousand times dimmer than the Sun, AB Doradus C lies on the exact track expected for a 75 million year old star with 9% the Sun's mass. ... Small stars are back on the expected track, " concludes team member Roberto Abuter...