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

Earth asteroid that had been hidden in the sun’s glare, marking a significant advancement in planetary defense. This ...

A newly discovered space rock zoomed safely by Earth on Wednesday (Oct. 15) at only about a quarter of the average distance ...

An asteroid just flew closer to Earth than many satellites, according to space agencies. The space object, named 2025 TF, ...

An asteroid about the size of a small building zoomed past Earth unnoticed by astronomers last week, coming as close to the Earth’s surface as the International Space Station, according to the ...

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

A small asteroid, known as 2025 TF, flew over Antarctica on October 1, 2025, at an altitude of only 266 miles.

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

The comet, called 3I/ATLAS, is the third known interstellar object that has come through our solar system. As it flies deeper ...

A NASA-backed planetary defense group has reportedly begun efforts to pinpoint comet 3I/ATLAS after it was observed emitting ...

Scientists have confirmed the discovery of a new quasi-moon, 2025 PN7, a small asteroid that will shadow Earth’s orbit for ...

The month brings a spectacular lineup of celestial sights—including a rare chance to see Mercury without a telescope and a ...