Titans of the Cosmos: The Universe’s Most Massive Stars

The provided text details an astronomical journey through the cosmos, highlighting several of the most massive and volatile stars known to science. It begins by describing the imminent death of the red hypergiant WOH G64, explaining how its final supernova explosion will eventually outshine its entire galaxy. The narrative then provides a comparative scale of various celestial titans, ranging from the well-known Vega and Rigel to the record-breaking Stephenson 2-18. Each example illustrates how these monstrous objects dwarf our own Sun in both physical volume and luminosity, with many destined to become black holes. By exploring the extreme physical properties of these giants, the source emphasizes the instability and insignificance of smaller solar systems when faced with such galactic-scale forces.