Earth is perfectly safe from a menacing asteroid known as 2024 YR4 that is big enough to level a city, but the moon? Not so ...

The space rock caused quite a stir after astronomers first spotted it last year on a trajectory bringing it uncomfortably ...

After YR4 was first discovered in late-2024, its odds of impact with ... reemerges in 2028. NASA, though, is already making plans to study it again in three years when the asteroid is back in ...