Liu, Y.; Welsch, B. T.; Valori, G.; Georgoulis, M. K.; Guo, Y.; Pariat, E.; Park, S.-H.; Thalmann, J. K.: Changes of Magnetic Energy and Helicity in Solar Active Regions from Major Flares. The Astrophysical Journal 942, p. 27 (2023)
A star’s chemical composition strongly influences the ultraviolet radiation it emits into space and thus the conditions for the emergence of life in its neighbourhood.
A single star has provided information about the collision of the Milky Way with the dwarf galaxy Gaia-Enceladus. The event likely took place approximately 11.5 billion years ago.