Zhang, Z.; Nielsen, E.; Plaut, J. J.; Orosei, R.; Picardi, G.: Ionospheric corrections of MARSIS subsurface sounding signals with filters including collision frequency. Planetary and Space Science 57 (3), pp. 393 - 403 (2009)
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.