Mars has two moons, but they're not quite like Earth's moon. That's raised a lot of questions about where they're from, ...

A new quasi-satellite, 2025 PN7, has been discovered, joining a group of asteroids that orbit the Sun alongside Earth. These ...

Astronomers can usually spot "planet killer" asteroids long before they approach Earth. But what if they can't?

If such ‘twilight’ asteroids approach Earth, "they could pose serious impact hazards," warned the astronomer behind the ...

The asteroid belt between Mars and Jupiter contains ancient, ice-covered rocks that may have delivered much of Earth’s water ...

Astronomers have discovered asteroid 2025 SC79, a skyscraper-sized space rock orbiting the sun in just 128 days. the ...

As mankind was planning the first moon landing in the 1960s, an asteroid approached Earth—and still hasn’t left.

PN7 has been a mysterious space traveler, shadowing our planet for decades undetected in our vast celestial world, until now.

The mini-moon/asteroid will only be joining Earth's orbit temporarily before it returns to its other orbital path.

This quasi-moon is expected to remain in its current near-Earth orbit for about another 60 years before the gravitational tug ...

In the distant past, the solar system was rife with impacts and collisions. Millions of rocky objects zoomed chaotically ...

The newly discovered "twilight" asteroid, 2025 SC79, was obscured by the sun's glare until an astronomer pointed the Dark ...