Earth is defenceless against thousands of "city killer" asteroids which space chiefs can't track down, NASA has warned. The 140m-wide rocks are shooting around near our planet and could "really cause ...

NASA's head of planetary defence has revealed what keeps her up at night – tens of thousands of 'city killer' asteroids that remain undetected. Dr Kelly Fast, who leads efforts to find and track ...

Most near-Earth asteroids are thought to drift in from the main asteroid belt. But a small subset may have a much closer origin: the moon. One intriguing example is 469219 Kamoʻoalewa (2016 HO3), an ...

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EARTH cannot defend itself against the thousands of “city killer” asteroids that are zooming around space near our planet, Nasa chiefs warn. They reckon there are about 15,000 undetected medium-sized ...

Thousands of asteroids pass near Earth every year, but only a small number truly concern scientists. These objects are monitored closely because of their size, trajectory, and potential impact energy.

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

They believe there are about 15,000 undetected medium-sized rocks in striking distance of the globe. A 2022 mission called Dart proved that in an emergency we could bash one off course with a rocket.

NASA is monitoring an asteroid that is hurtling toward Earth at about 22,000 miles per hour, according to the Center for Near Earth Object Studies (CNEOS). The space rock known as "2026 CC" measures ...

With athletes from all around the world competing at the 2026 Winter Olympics, pronouncing their names can get a little tricky at times. Luckily, the official Olympics website has a handy way to help ...