Contextualizing speed and distance helps set expectations. Around perihelion, 3I/Atlas is moving at roughly 68 km per second. Its closest approach to Earth is about 1.8 AU, near December 19, which is ...

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

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

Quasi-moons are not real moons and don't actually orbit the Earth, although they sometimes appear to do so for short periods of time, Phil Nicholson, professor of astronomy at Cornell University, told ...

Earth has just acquired a new best friend in space – a small asteroid named 2025 PN7. Not quite a moon, it has been moving in quiet company with our planet for decades, pacing our planet in nearly ...

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

The Paris-based European Space Agency says a near 10-foot-wide asteroid passed Earth 265 miles above Antarctica but was not detected until hours after it was gone.

Asteroid ‘Families’ Reveal Hidden Histories and Impact Risks across the Solar System ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. When it smashed into Earth "with the energy of about 8 billion times a World War II-era nuclear ...

With help from amateur astronomers, scientists tracked how an asteroid travelled from space, broke up in Earth's atmosphere and sent fiery fragments shooting to the ground, gathering new information ...

NASA is tracking Asteroid 2024 YR4, a 300-foot piece of rock that could be on track of colliding with Earth. Scientists say the risk of being hit in 2025 is low. Trump has signed just five bills into ...