guac: "Mystery of Interstellar Visitor ‘Oumuamua Gets Trickier https://www.scientificamerican.com/article/mystery-of-interstellar-visitor-oumuamua-gets-trickier/"

Mystery of Interstellar Visitor ‘Oumuamua Gets Trickier scientificamerican.c...

Rafi Letzter Livescience, About The Author S, Recent Articles Rafi Letzter, Recent Articles Livescience

Aliens? Or a chunk of solid hydrogen? Which idea makes less sense?