Our 24-hour day measures Earth’s rotation relative to the Sun, known as a solar day. This is slightly longer than Earth’s ...

FLAGSTAFF, Ariz. - Scientists across the world are focusing on an asteroid that has a slim chance of hitting Earth. Here's what to know about the asteroid, as well as the role one Arizona observatory ...

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An international study led by researchers at São Paulo State University (UNESP) in Brazil has identified a little-known but potentially significant threat: Asteroids that share Venus's orbit and may ...

NEW YORK -- An asteroid NASA's been tracking for nearly 25 years could impact Earth in the future, a new report reveals. First discovered in 1999, Bennu, the near-Earth asteroid, could possibly drift ...

A recently discovered asteroid, named 2024 YR4, is now the riskiest asteroid ever detected. On Tuesday, NASA calculated that the space rock had a 3.1% chance of hitting Earth in 2032, while the ...