The 700–1,300 feet-wide space rock deformed rocks more than six miles from the impact site when it hit 600 million years ago.

Once the new measurements were taken and the math was done, the probability of YR4 hitting the Earth began to decline, ...

YR4 has a very small chance of striking Earth when its orbit briefly intersects our planet's in December 2032.

Because it's big enough to destroy a city asteroid 2024 YR4 became a source of alarm due to the uncommonly high risk it had ...

scientists calculated that it had more than a 1 percent chance of striking Earth — the only large asteroid known to have an impact probability so big. As scientists studied more data on the ...

The asteroid, officially known as 2024 YR4 ... the asteroid’s potential path crossed many of the world’s biggest cities, and could cause “severe blast damage” up to 30 miles from where ...

Astronomers believe thousands of large undiscovered asteroids, that could cause regional damage, may be in space.

For an hour, HERA flew as close as 5,600 kilometers from the Martian surface, at a speed of 33,480 kilometers an hour. It ...

NASA’s latest estimate for the asteroid, known as 2024 YR4 ... followed by blame for what was perceived to be a big mistake. “It ended up being a bit of an embarrassment,” Binzel said.

Because it's big enough to destroy a city asteroid 2024 YR4 became a source ... For a time, it was the only object among more than 37,000 known large space rocks with any chance of hitting ...