The threat of a newly discovered asteroid has risen slightly in the past few weeks, as the world’s telescopes rush to track ...

The asteroid, called 2024 YR4, is roughly 130 to 300 feet across. It was first reported on Dec. 27, 2024, by the NASA-funded Asteroid Terrestrial-impact Last Alert System station in Chile. Its impact ...

The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking ...

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