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Baumann, I.; Solanki, S. K.: On the size distribution of sunspot groups in the Greenwich sunspot record 1874-1976. Astronomy and Astrophysics 443, pp. 1061 - 1066 (2005)
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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.