Kuiper Belt

NASA renames ice world, visited by New Horizon, 'Arrokoth' after Nazi-link backlash

The planet was named Ultima Thule after a mythical European land that is beyond the borders of the known world.

NASA researchers find evidence of water, organics on Kuiper Belt object Ultima Thule

NASA has found evidence for methanol, water ice, and organic molecules on Ultima Thule's surface.

NASA's faraway space snowman Ultima Thule has a flat, not round, behind

The finding may spark new theories on how such primitive objects formed early in the solar system.

Planet Nine mystery solved? Study suggests it's something far cooler than a planet

Planet Nine could just be a clump of smaller objects that appear as one, single 'planet'.

Light, camera, tumble! NASA releases film of space snowman captured by New Horizons

The small, icy rock is seen spinning like a propeller on its centre – like a tumbling snowman!

NASA's explorer 'phoned home' after journey to the most distant world ever

The explorer travelled 4 billion-mile to a frozen rock at the edge of the solar system.

NASA's New Horizons to fly into the New Year studying a distant rock beyond Pluto

New Horizons will fly-by of the farthest object ever studied by a spacecraft on New Years Day.

NASA's New Horizons to do historic New Years' flyby of farthest ever object studied

Plutonium-powered New Horizons was launched in 2006 and is a days away from flying by Ultima Thule.

NASA's New Horizon spacecraft spots its next target, an icy world 160 mn km away

The New Horizons probe, which flew past Pluto in 2015, is set to encounter the Kuiper Belt object.

Scientists find a carbon-rich asteroid which may provide insights about the Sun's formation

The object likely formed in the asteroid belt between Mars and Jupiter and has been flung billions of kilometres from its origin to its current home in the Kuiper Belt.