A July flyby of a massive asteroid went undetected until two days after it passed, raising urgent questions about planetary ...

Major space events this century include a near-Earth asteroid flyby in 2029, the darkest lunar eclipse, a planetary parade in ...

On October 31, 2015, an asteroid shaped like a human skull flew by Earth. It arrived with excellent timing on Halloween, ...

On October 31, 2015, an asteroid shaped like a human skull flew by Earth. It arrived with excellent timing on Halloween, ...

Physicist Michio Kaku says interstellar object 3I/ATLAS may reveal signs of intelligent life if it gains energy near the Sun.

Scientists are observing the skies as the comet 3i/ATLAS makes a close flyby of Earth. Gabriel J. Sánchez is a producer for NPR's All Things Considered. Sánchez identifies stories, books guests, and ...

Perihelion for 3I/ATLAS takes place on Oct. 30, when the interstellar interloper will be 1.35 astronomical units (125 million ...

Astronomers worldwide are intensely studying 3I/ATLAS, a mysterious interstellar object entering our solar system. Its ...

Scientists are investigating a mysterious pulse signal from interstellar object 3I/ATLAS. The signal reportedly follows a ...

I/ATLAS made its closest approach to Earth on 29 October 2025, coming within 1.8 astronomical units, or around 167 million miles.

Asteroids, comets, and clouds contain complex organic molecules that form in space and might have kickstarted life on Earth ...

I/ATLAS is an interstellar object — the third known visitor from beyond our solar system — now sweeping past the Sun on a one ...