James Webb telescope takes emergency look at 'city-killer' asteroid 2024 YR4 ahead of close encounter in 2032 Live ScienceRising Odds Asteroid That Briefly Threatened Earth Will Hit Moon Barron'sJames Webb Space Telescope gets glimpse of infamous asteroid 2024 YR4: See photos USA TodayNASA Update on the Size Estimate and Lunar Impact Probability of Asteroid 2024 YR4 NASA Science (.gov)