February 5, 2019

Artist's concept of protoplanet impact (Image Nasa/JPL-Caltech modified)

An article published in the journal “Nature Astronomy” describes a study about two super-Earths in the Kepler-107 star system that have similar size but very different densities that indicate a very different chemical composition. A team of researchers led by Aldo Bonomo of the Italian National Institute of Astrophysics (INAF) in Turin used the HARPS-N spectrograph installed on the Galileo National Telescope in the Canary Islands to examine the planets Kepler-107b and Kepler-107c and conclude that probably the remarkable differences between them are due to a primordial impact.