Ilya G. Usoskin[2] is a Finnish astrophysicist who is a professor at University of Oulu and head of Cosmic Ray Station at Sodankylä Geophysical Observatory.

[3][4] In 1982, Ilya Usoskin graduated from the Saint Petersburg Lyceum 239[5] with intensified study of physics and mathematics, in parallel with Grigory Perelman.

[6] During 1997–1999, he was a postdoctoral researcher at the INFN Milano working on the Alpha Magnetic Spectrometer experiment.

[7] Since 2000, he has been a staff of the University of Oulu—head of the Oulu Cosmic Ray station.

[9] Usoskin works in the fields of Solar Physics, Cosmic Rays, Heliosphere and Space Climate.