How can humanity use the developing Lunar Gateway as an appropriate starting point for advancing human space exploration beyond the moon? This is what a recent study presented at the 56th Lunar and ...

OF201 spends only 1% of its orbital time close enough to us to be detectable. The presence of this single object suggests ...

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

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

Less than 1% of this dwarf planet candidate's orbit is close enough to detect, which means astronomers are lucky to have ...

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 ...

A series of studies have cast doubt on the sensational claim that "the strongest evidence yet" was found that life exists anywhere else besides Earth.

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

Cheng discovered the object as part of an ongoing research project to identify TNOs and possible new planets in the outer ...

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

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

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.