‘City-killer’: Why scientists are watching asteroid 2024 YR4 closely
On Christmas Day 2024, an asteroid nearly the size of a football field silently slipped past Earth, coming within twice the distance of the Moon. Just two days later, astronomers peering through a Chilean telescope noticed something disconcerting: this space rock, now designated 2024 YR4, might not miss us next time.Since then, its trajectory has … Read more