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Asteroid Has a 1% Chance to Impact Earth in 2032 — Should We Be Worried?

Learn about 2024 YR4, an asteroid that currently has a more than 1 percent chance to hit the Earth in 2032, catching the attention of scientists.

Jack Knudson
ByJack Knudson
Credit: Mikael Damkier/Shutterstock

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About seven years from now, in 2032, an asteroid orbiting the Sun will fly so close to Earth that it has a little over 1 percent chance of impact. The asteroid, named 2024 YR4, stands out as the only near-Earth asteroid out of the over 37,000 currently recognized to have an impact probability above 1 percent.

Scientists calculated this probability after the asteroid was reported on December 27, 2024 at a telescope in Chile belonging to the Asteroid Terrestrial-impact Last Alert System (ATLAS), funded by NASA.

Around that time, 2024 YR4 had already made a close approach to our planet at 829,000 kilometers (about 515,116 miles) away, giving scientists a window to estimate when it will return and how likely it is to strike Earth. As of January 30, 2025, it has a 1.2 percent chance to impact Earth on December 22, 2032.

This discovery is nothing to scoff at ...

  • Jack Knudson

    Jack Knudson

    Jack Knudson is an assistant editor for Discover Magazine who writes articles on space, ancient humans, animals, and sustainability, and manages the Planet Earth column of the print issue.

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