Obama notes that he's busy working on the speech… Watch a massive asteroid pass by Earth, beginning at 9 p.m. EST An asteroid the size of three football fields is expected to zip by Earth at a ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. NASA estimates that ...

The estimated flight path of an asteroid the size of Big Ben’s tower will see it pass over some of the world’s most populous cities, according to the latest data from Nasa. Asteroid 2024 YR4 ...

As scientists predict an asteroid has a very small chance of striking Earth in 2032, China is forming a planetary defense force that could defend against asteroid strikes. NBC News' Janis Mackey ...

One fateful day 66 million years ago, the dinosaurs — which had inhabited Earth for about 165 million years — got a nasty surprise: A roughly 9-mile-wide (15 kilometers) asteroid crashed into ...

On Feb. 18, 2025, NASA updated the probability of asteroid "2024 YR4" impacting Earth on Dec. 22, 2032, from 2.6% to 3.1%. The European Space Agency (ESA) also updated its estimate of the ...