If confirmed, the rock would become just the second world past Neptune in our solar system to host an atmosphere. ......

A tiny, little-known world beyond Pluto appears to have an atmosphere, Japanese astronomers said Monday, defying what had been thought possible for...

CAPE CANAVERAL, Fla. (AP) — A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created...

How did that happen? An icy world, perhaps just 300 miles wide and far beyond Pluto, may have air, challenging the assumption that small space objects...

How did that happen? An icy world, perhaps just 300 miles wide and far beyond Pluto, may have air, challenging the assumption that small space objects...

Beyond the reaches of Neptune, the outskirts of our solar system are teeming with thousands of icy celestial bodies like Pluto. For years, it's been...

A 500-kilometre-wide object in a similar orbit to Pluto challenges our assumptions about small bodies in the outer solar system ......

A 500-kilometre-wide object in a similar orbit to Pluto challenges our assumptions about small bodies in the outer solar system ......

A new study suggests that a tiny, icy world beyond Pluto harbors a thin, delicate atmosphere that may have been created by volcanic eruptions or a...

A new study suggests that a tiny, icy world beyond Pluto harbours a thin, delicate atmosphere that may have been created by volcanic eruptions or a...