An asteroid could hit Earth: What could happen, and should we worry?

An asteroid named 2024 YR4, first spotted Dec. 27, is possibly headed right toward Earth, but we don’t need to run for cover just yet. Here’s why.

​An asteroid named 2024 YR4, first spotted Dec. 27, is possibly headed right toward Earth, but we don’t need to run for cover just yet. Here’s why.   An asteroid named 2024 YR4, first spotted Dec. 27, is possibly headed right toward Earth, but we don’t need to run for cover just yet. Here’s why.