A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

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

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

The solar system is a grand cosmic stage where each planet and moon plays a unique role in a story billions of years in the making. From Mercury’s shrinking surface and Venus’s runaway greenhouse ...

A recent study introduces a potential new candidate, dubbed Planet Y, inferred from the tilted orbits of distant objects in the Kuiper Belt.

Lying between Mars and Jupiter is a massive ring of rock debris—the asteroid belt. Now thin, it’s fading away gradually.

Need a refresher about 3I/ATLAS? Here's everything to know about the interstellar object, including when the latest observations will be made.

Astonishingly, not one but two interstellar asteroids have been detected entering our solar system since 2017. The first was given the Hawaiian name ‘Oumuamua, meaning ‘messenger from afar,’ after its ...

Juno does not fall into those protected categories, and was also zeroed-out on the President's fiscal year 2026 budget ...

Bizarre NASA discoveries that we’re not allowed to talk about (but we will) Space exploration consistently reveals phenomena ...

The formation of Mercury remains an unsolved mystery. The planet closest to the sun has a disproportionately large metallic ...