Data collected from a once-defunct NASA satellite show that Earth grew two extra radiation belts following a supercharged geomagnetic storm in May 2024, including a never-before-seen structure that is "likely still there today," researchers say.

Scientists across the world, including some in Arizona, are keeping an eye on an asteroid that has a very slim chance of hitting earth in the near future. Here's what to know about asteroid 2024 YR4.