Talk about far out. NASA's unmanned New Horizon spacecraft, now zooming into outer space beyond Pluto, will fly by a small space rock known as Ultima Thule on New Year's Day.

It took over nine years for New Horizons to reach Pluto after blasting off atop an Atlas 5 rocket on Jan. 19, 2006. After ...

SPACE.com asked some experts to weigh in onthis debate, ... Pluto has family inthe outer solar system." Tyson was one of the first to push forPluto's demotion. A decade ago, ...

Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

The James Webb Space Telescope (JWST), operated by NASA, has uncovered intriguing new details about Charon—Pluto’s largest moon—including the presence of ...

Painting depicting the new horizons space probe as it approaches Charon, Pluto's moon. Dated 2015. (Universal History Archive/Universal Images Group via Getty Images) ...

NASA's New Horizons Pluto probe is gearing up to cross the "termination shock," an exotic boundary in the outer solar system, as early as 2027.

This gentile tug is enough for Pluto to sport an atmosphere, but a relatively thin one at that, and one that stretches far into outer space. While Pluto doesn’t have much gravitational influence to ...

Check out the naming themes for Pluto and its five moons. ... Miriam Kramer worked as a staff writer for Space.com for about 2.5 years before joining Mashable to cover all things outer space.

It was one of the most ambitious missions for NASA since the turn of the century, with photos reshaping what scientists know ...