Li, L. P.; Peter, H.; Chen, F.; Zhang, J.: Conversion from mutual helicity to self-helicity observed with IRIS. Astronomy and Astrophysics 570, A93 (2014)
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.