#near-earth-asteroid

#near-earth-asteroid

For the last 4.5 billion years our planet has had a reliable celestial companion - the moon. Its orbit around the Earth has a profound effect on life here, from influencing the tides to stabilising our seasons. But astronomers have now discovered another sidekick that may have been following our planet around for some time. Experts at the Pan-STARRS observatory in Hawaii have spotted a quasi-moon, called '2025 PN7', that has been tagging along after Earth since the 1960s.