The TNO, which are described as minor planets that orbit the sun at a greater distance than Neptune, were found on the edge ...

Scientists have identified an object about 700km wide inhabiting the frigid outer reaches of our solar system that might ...

Scientists have discovered a colossal object approximately 435 miles wide in the frigid outer reaches of our solar system, ...

Scientists have recently spotted a huge object far away in the cold outer reaches of our solar system. This ...

OF201, a possible dwarf planet with a 25,000-year orbit, challenging theories about Planet Nine and the solar system’s edge.

A new astronomical study suggests that Earth could one day be ejected from the solar system, not by the aging of the Sun, but ...

For instance, Neptune migrated outward, switching places with Uranus, and pushed a lot of the small, icy bodies into the ...