For centuries, astronomers have sought to understand the formation and evolution of the solar system and the dynamics that ...

Scientists analyzing an ultra-hot giant planet believe it was formed by absorbing lightweight gases like methane evaporating ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system.

For decades it was thought that water was prevalent in the outer reaches of the Solar System early in its history, with ...

A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

The object is about 700 kilometres wide and lies nearly three times farther from Earth than Neptune. Its highly elongated ...

NASA has just announced a groundbreaking discovery: 10 new Earth-like planets beyond our solar system that could potentially ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

The core of the Red Planet may be filled with sulfur. New experiments have shown that the core of Mars formed much faster ...

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly ...

WASHINGTON: A group of scientists has found a strange new object about 435 miles wide at the far edge of the solar system. It ...