June 25, 2018
The U.S. government is stepping up efforts to protect the planet from incoming asteroids that could wipe out entire regions or even continents. The National Science and Technology Council released a report last week calling for improved asteroid detection, tracking …
May 16, 2017
When the asteroid named 2014 J025 passed by the Earth in April, it came within 1.1 million miles of the planet — a close shave by cosmic standards and also the nearest in more than a decade. And J025 was …
November 22, 2013
On Feb. 15, a 13,000-ton rock plunged through the skies above Chelyabinsk, Russia. It shone 30 times brighter than the sun, and hurtled at 42,000 miles per hour toward a city of more than a million people. As the rock …