
Planetary ScienceMarch 9, 2023
Newfound Asteroid May Strike Earth in 2046, NASA Says
Preliminary estimates suggest that a 50-meter space rock called 2023 DW has a roughly one-in-600 chance of colliding with our planet in 23 years

Newfound Asteroid May Strike Earth in 2046, NASA Says
Preliminary estimates suggest that a 50-meter space rock called 2023 DW has a roughly one-in-600 chance of colliding with our planet in 23 years

North Pole’s Largest-ever Ozone Hole Finally Closes
An unusually strong polar vortex kept the hole open for nearly a month—now, it’s finally shut again