Not much is known about 2024 YR4, but the asteroid is estimated to be 131 to 295 feet (40 to 90 meters) wide, a “size range comparable to that of a large building,” said Dr. Paul Chodas ...

Exploding stars in near-solar space may have triggered at least two mass extinction events in Earth’s history. A new study ...

Exploding stars in near-solar space may have triggered at least two mass extinction events in Earth's history. An analysis of ...

At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova ...

An asteroid nearly the size of a football field now has roughly a 0.004% chance of hitting Earth in about eight years, NASA says — with the space agency saying it "no longer poses a significant ...

The narrow difference is due to the two agencies’ use of different tools for determining the asteroid’s orbit and modeling its potential impact. But both percentages rise above the 2.7% chance ...

Up until August 2024, the WISE spacecraft was one such observatory. The telescope was repurposed for asteroid and comet tracking after its original mission ended. In the next few years ...

Artist's impression of an asteroid. This image is not intended to reflect the characteristics of any specific known asteroid. ESA-Science Office It seems that Earth isn’t likely to be struck by ...