China is recruiting for a planetary defense force amid growing global focus on the risk of asteroids colliding with Earth.

“What keeps me up at night is the asteroids we don’t know about," said NASA's planetary defense chief.

NASA experts are raising alarms about the growing threat posed bynear-Earth asteroids, with some of these objects having the potential to cause devastating damage to cities. While some large asteroids ...

NASA's head of planetary defence, Dr Kelly Fast, has issued an unsettling update on thousands of ‘city-killer’ asteroids that could hit Earth.

Scientists discussed the threat of asteroids at a recent conference in Phoenix. Here's what they said.

Space agencies around the globe have launched an unprecedented wave of planetary defense exercises, all centered on a mysterious interstellar visitor that refuses to behave like anything scientists ...

She’s worried about the a-rock-alypse. A planetary defense expert is warning that humanity is defenseless against up to 15,000 undetected near-Earth asteroids that have the potential to take out a ...

NASA planetary defense experts report that mid-size near-Earth asteroids could cause regional damage, with detection and deflection remaining limited, according to New York Post and AAAS reports.

NASA planetary defense experts warn that up to 15,000 undetected asteroids could devastate a major city on Earth.

The Panel on Mars is one of six panels providing topical input to the Planetary Science and Astrobiology Decadal Survey Steering Group. This panel will discuss the role played by focused studies of ...