 In 2020, Paleobiologist Grzegorz Sadlok proposed the hypothesis that life can transit interstellar distances on nomadic exoplanets and/or its exomoons.In 1903, Svante Arrhenius published in his article "The Distribution of Life in Space", the hypothesis now called radiopanspermia, that microscopic forms of life can be propagated in space, driven by the radiation pressure from stars.Arrhenius argued that particles at a critical size below 1.5 μm would be propagated at high speed by radiation pressure of the Sun.