Astronomers using European Southern Observatory (ESO) telescopes have discovered giant spots on the surface of extremely hot stars hidden in stellar clusters. Not only are these stars plagued by magnetic spots, some also experience superflare events, explosions of energy several million times more energetic than similar eruptions on the Sun. The findings, published today in Nature Astronomy, help astronomers better understand these puzzling stars and open doors to resolving other elusive mysteries of stellar astronomy. The release, images and videos are available on: https://www.eso.org/public/news/eso2009/ Kind regards, The ESO Department of Communication 1 June 2020 | 27 May 2020: ESO's suite of telescopes are working to uncover some of the biggest and most fundamental mysteries of our Universe today, advancing our understanding of the cosmos, even as about ... | Read more | | 29 May 2020: Bigger than all existing optical research telescopes combined, ESO's Extremely Large Telescope (ELT) will drive astronomy into the future, tackling the biggest scientific challenges of our time. But to construct ... | Read more | | | | |