Meteorites are primarily stony chondrites, but also include iron-rich achondrites and pallasites. Studying meteors provides ...

In late 2024, astronomers spotted asteroid 2024 YR4 on a trajectory that could potentially threaten Earth. This observation ...

Surveyor, a $1.4-billion infrared telescope designed to detect asteroids and comets that could pose a threat to Earth.

The NEO Surveyor fulfills a 2005 act of Congress ordering NASA to catalog 90% of near-Earth objects larger than 459 feet, ...

Any attempt by Turkey to help Syria establish new air defenses would likely encounter many of the same obstacles Russia and ...

By Ivan Nechepurenko and Constant Méheut On Tuesday, America’s top intelligence officials will release their current assessment of Russia. They are caught between what their analysts say and ...

LONDON — It was a spectacular thing to wake up to: Heathrow, one of the world ’ s busiest airports, shut down and plunged into darkness. More than a thousand flights grounded, another hundred ...