The asteroid known as 2024 YR4 is out of sight yet still very much on scientists’ minds. The building-sized object, which initially appeared to be on a potential collision course with Earth, is ...

Every sensible person knows that when Earth is eventually destroyed, it will be by a huge asteroid like the one that killed all the dinosaurs. We learned this mostly from Jerry Bruckheimer, but Jerry ...

At 5:43 p.m. on Monday, Dec. 9, UA Professor of Planetary Science Dante Lauretta unveiled the countdown clock for the OSIRIS-Rex mission. At that point, exactly 999 days remained until the launch ...

A large asteroid, named 2025 OT7, is set to safely pass by Earth on August 5, according to official space tracking reports. The asteroid is roughly 170 feet long, which is about the size of a ...