Mars's moon Phobos is so strange that no one knows how it formed. But a forthcoming mission could solve this mystery - and a ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

Michigan State University and NASA researchers discover seven dark comets that reveal new solar system secrets.

Eight planets, hundreds of moons, hundreds of thousands of asteroids, and billions of comets orbiting our Sun make up our ...

The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The so-called 'planetesimal belts' are filled with tiny millimeter-sized particles created by collisions between comets.

New photos of comet C/2024 G3 (ATLAS) suggest that it could be disintegrating due to "thermal stress" from its recent ...

G3 (ATLAS) blazed past the Sun, captured in stunning detail by the SOHO spacecraft. Scientists used its passage to study how ...

G3 (ATLAS) is one of the few comets on record that became bright enough to be visible in the daytime without optical aid like ...

From Jan. 11 to 15, 2025, a bright comet surged through images from the ESA (European Space Agency) and NASA SOHO (Solar and Heliospheric Observatory) spacecraft. Called C/2024 G3 (ATLAS), the comet ...

some of which fly through the inner solar system as comets, which languishes far from the sun at distances between 30 and 55 astronomical units (AU; one AU is 149.6 million kilometers/93 million ...

Scientists studying samples that NASA collected from the asteroid Bennu found a wide assortment of organic molecules that ...