The Moon isn’t the only traveling buddy keeping the Earth company on its journey around the Sun. Occasionally an asteroid will get caught in a gravitational dance with our home for a few years or so, before disappearing into space again. Last year astronomers discovered one of the most stable of these “quasi-satellites”, and now they’ve peered closer to get a better understanding of what it is and where it might have come from.
Link: https://newatlas.com/asteroid-quasi-satellite-closer-look/51820/