An article published in the journal “Monthly Notices of the Royal Astronomical Society” describes a research on the interstellar asteroid 1I/2017 U1, commonly known as ‘Oumuamua. A team of researchers tried to understand the implications of its passage in the solar system for planetary dynamics and the formation of planetesimals, the small celestial bodies that can accumulate materials to become planets. ‘Oumuamua could be a fragment of one ejected from its system and some clues suggest that its nature is cometary rather than asteroidal.