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.

Scientists in Australia have discovered what they say is the largest asteroid impact area ever found on Earth. WSJ's Monika Auger reports. Photo: A. Clikson Intel Made a Mistake Decades Ago.

Earthlings can keep their plans seven years from now after scientists have officially declared Asteroid 2024 YR4 is not a threat to our planet. Asteroid 2024 YR4 was discovered on Dec. 27 by the ...