A groundbreaking study published in Communications Earth & Environment has called into question the long-standing assumptions ...

Close stellar encounters could change the structure of our planetary system, potentially dooming Earth or other worlds to ...

Rocky bodies called protoplanets were thought to have formed slightly earlier in the inner solar system than those beyond the ...

A small, inconspicuous meteorite may be about to change our understanding of how and when our solar system formed. Tiny shavings from the meteorite Northwest Africa 12264 are challenging the long-held ...

A meteorite, Northwest Africa 12264, is questioning the established timeline of our solar system's formation, suggesting ...

Artist's impression of Planet Nine – a suspected “wide-orbit” planet – with the Sun in the distance; Neptune's orbit is shown ...

A fascinating glimpse into how a solar system like our own is born has been revealed with the detection of planet-forming ...

“This is a big step in understanding the outer solar system,” said Dr. Rosemary Pike, lead researcher from the Center for ...

In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that ...

Astronomers have confirmed that a recently spotted object is an interstellar visitor, and appears to have come from the ...

There's a new interstellar object moving through our solar system and it's called 3I/ATLAS, according to NASA.

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...