A Japanese spacecraft is on a remarkable journey toward one of the most puzzling celestial objects in our solar system — a ...

These strange objects could explain how water arrived on Earth, but may also be a previously unrecognised threat to our ...

The universe is a vast expanse filled with wonder, and among its most intriguing entities are meteorites. These celestial bodies, which fall to Earth, offer vital insights into the history and ...

Aliens are visiting our solar system. Not little green men, sadly, but natural alien objects—cosmic bodies such as comets and asteroids born elsewhere in the galaxy that zip by the sun as they drift ...

What are dark comets? Our team identified a class of small bodies in the solar system that take some of the properties of both comets and asteroids. We called them dark comets.

Of course, 3I/ATLAS is no ordinary comet. Discovered on July 1, 2025 by the Asteroid Terrestrial-impact Last Alert System ...

These tails form because comets have ice in them, while asteroids supposedly do not. When a comet gets close to the Sun, these ices heat up and sublimates, which means they turn from ice into gas.

A swarm of interplanetary dust, rocks, comets and asteroids thought to be responsible for two famous impacts here on Earth has been found to be not quite as menacing as astronomers had feared.

Recent studies have provided detailed photometric analyses of activity in main-belt comets, specifically focusing on objects such as 176P/LINEAR, 238P/Read and 288P/ (300163) 2006 VW139.

Comets and asteroids are among the Solar System's very oldest inhabitants. This book tells the story of these enigmatic celestial objects, revealing how scientists are using them to help understand a ...

291 p. : ill., maps ; 25 cm Place Earth Data Source Smithsonian Libraries Topic Comets Asteroids Meteorites Astrogeology History siris_sil_590147 SIL DYNAMICS OF COMETS AND ASTEROIDS AND THEIR ROLE IN ...