The research published in the Monthly Notices of the Royal Astronomical Society says that the new moons are entirely made up of extremely tiny dust particles of less than one millimetre size and reflect light rather faintly. This is the reason why they were difficult to observe and study in the first place even when they are located at around the same distance as the Moon from the Earth—400,000 kilometres. “It is very difficult to detect the clouds against the galactic light, star light, zodiacal light, and sky glow,” coauthor of the paper Gábor Horváth, a physicist at Eötvös Loránd University,