For several years, astronomers have been aware of a much-ballyhooed “city-killer” asteroid named YR4 2024, which is hurtling roughly toward the Earth; as it approaches, astronomers have been waffling ...

The James Webb Space Telescope has taken its first look at the near-Earth asteroid 2024 YR4 before a perilous close approach ...

A near-Earth asteroid named 2024 YR4 was first reported in December by the NASA funded Asteroid Terrestrial-impact Last Alert System station in Chile. As of Thursday, Feb. 20, data shows that there is ...

I have been studying planetary defense, particularly being part of past, ongoing, and future small body missions. I was part of the NASA/DART mission. I am currently part of the NASA/Lucy mission and ...

This article was originally published at The Conversation. The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights I was preparing for my early morning class back in ...

On Feb. 18, 2025, NASA updated the probability of asteroid "2024 YR4" impacting Earth on Dec. 22, 2032, from 2.6% to 3.1%. The European Space Agency (ESA) also updated its estimate of the probability ...