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.

NASA's New Horizons spacecraft conducted the first and only flyby of the Pluto system, culminating at the closest approach of that distant world in July 2015. Sailing onward, the probe carried out ...

The document builds on the academies' decadal survey, outlining recommended missions for NASA's next New Frontiers program.

NASA’s New Horizons mission changed our understanding of the outer solar system. After its famous Pluto flyby, it traveled even farther to meet an object called Arrokoth. This mysterious Kuiper ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short life of what was, for a single human lifetime, the solar system's smallest ...

NASA sent its probe New Horizons on a flyby in 2015. It confirmed the tiny planet harbored an ocean beneath its thick, icy shell. Pluto was always in a tough spot when it came to being a planet.

New Horizons project manager. Ultima Thule, at 4 billion miles (about 6.4 billion km) from the Sun and 1 billion miles (about 1.6 billion km) from Pluto, will be the most distant object ever directly ...

Since this particular mission was traveling farther out in our solar system, it also did a flyby ... NASA The New Horizons mission provided yet another view of Jupiter on its way to Pluto ...