Following its historic visit to Pluto, New Horizons has spent the past four years heading to a distant place only discovered in 2014: Ultima Thule. On New Year’s Day, it flew past that object and took ...

The New Horizons spacecraft got famous for its Pluto flyby in 2015, but here in 2019, it’s been making discoveries that are just as fascinating. On New Year’s Day, New Horizons flew past a distant ...

Ultima Thule is one of the solar system’s most hermitlike homebodies. In the 4.6 billion years since the small icy world formed, astronomers think that it has never moved from its original orbit about ...

LAUREL, Md. — Wow, what a way to ring in the new year. As the world celebrated the start of 2019, scientists with NASA's New Horizons spacecraft partied with them. But the bigger celebration came just ...