A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and Earth. The authors dubbed it Planet Y.

About 4. 6 billion years ago, the Solar System formed from a cloud of dust and gas collapsing in on itself due to gravity.

Scientists have shown that Earth’s basic chemistry solidified within just three million years of the Solar System’s formation. Initially, the planet was barren and inhospitable, missing water and ...

A new peer-reviewed study finds that early planet formations were assembled from fragments of earlier bodies within the Solar System.

Interstellar visitor 3I/ATLAS has been constantly changing as it makes its way through our solar system. That's to be expected, as, for the first time in potentially billions of years, it's getting ...

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

Scientists got a never-before-seen look at an area around a large exoplanet 625 light-years away where moons could potentially form.

Space scientists look back on three decades of exoplanet discoveries—from rows of massive ‘super-Earths‘ to worlds with perfectly synchronized orbits ...

The asteroid belt may seem permanent, but it is far from static. Its slow decline reveals a more violent past when more material collided with Earth and the Moon.

The discovery that water existed in liquid form a billion years after the parent body of Ryugu formed came from the study of rock samples collected from the NEO by Japan's Hayabusa2 probe between 2018 ...