Given the name 2017 OF201, the object falls into a category called trans-Neptunian objects that orbit the sun at a distance ...

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

Understanding Jupiter's early evolution helps illuminate the broader story of how our solar system developed its distinct ...

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 elongated orbital path around the sun. The researchers ...

spotting it as it travels on a highly elongated orbital path around the sun. The researchers called it one of the most distant visible objects in our solar system, and said its existence indicates ...

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

They call it the architect as it played a critical role in shaping the orbital paths of other planets and sculpting the disk of gas and dust from which they formed.

OF201 is incredibly lightweight on a cosmic scale. Scientists estimate its mass is about 20,000 times less than Earth’s and ...

WASHINGTON - 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 ...