SpaceSample of asteroid Ryugu brought to Earth is a strange dark colour Last year, Japan’s Hayabusa 2 asteroid explorer returned samples from the asteroid Ryugu, and now the first analysis of the rock shows it has a primitive composition and a curiously dark colour 51¶¯Âþ
SpaceEarth may have grown around a rock from an alien star system Interstellar objects like ‘Oumuamua might pass through our solar system in such high numbers that one could have acted as a seed around which Earth grew 51¶¯Âþ