When we think about asteroids that could threaten Earth, we often imagine massive, city-sized rocks hurtling through space. But what if the real danger comes from much smaller, barely detectable ones?

Humanity needs to step up its asteroid-hunting game. To date, astronomers have spotted more than 8,000 near-Earth asteroids that are at least 460 feet (140 meters) wide — big enough to wipe out an ...

Two massive asteroids are heading our way, and space watchers are paying close attention. According to NASA, these near-Earth objects (NEOs), 2025 OU1 and 2025 OX, will make their closest approach to ...

It's a bird. It's a plane. It's a skyscraper ... or at least, it's something as big as those things. Several large asteroids are set to pass by Earth this week, according to NASA's Jet Propulsion ...

Good things don’t come in threes. Venus is concealing at least three city-killer asteroids that could strike Earth in weeks without warning, potentially wreaking havoc upon our planet before we can ...

One significant threat to life here on Earth is the possibility that a massive asteroid will collide with our planet and destroy life as we know it. To understand the possibilities, large surveys of ...

Scientists all over the world are celebrating because of a discovery made by a telescope's camera built in the Bay Area. New objects, including some of the biggest, fastest moving asteroids ever seen, ...

On 14 February 2026, at the American Association for the Advancement of Science annual meeting in Phoenix, Arizona, Kelly Fast presented data on a persistent gap in planetary defense capabilities.

Asteroids contain large quantities of both precious and common metals, and despite the obvious challenges in reaching them, a few startups say these celestial bodies could offer a sustainable ...