R136a1 has 265 the mass of the Sun, and 8.7 million times its luminosity. It is also one of the hottest at over 50,000 K. The cluster is only about 1.5 million years old, and is pouring out a huge amount of energy. Together, they outshine our Sun by a factor of 30 million.
The star is the largest of nine huge stars in the cluster.
References[change | change source]
- An outstanding illustration is at Amos, Jonathan 2016. Hubble telescope spies stellar 'land of giants'. BBC News Science & Environment. 
- Crowther P.A. et al 2016. The R136 star cluster dissected with Hubble Space Telescope/STIS. I. Far-ultraviolet spectroscopic census and the origin of He II λ1640 in young star clusters. Monthly notices of the Royal Astronomical Society.