New Horizons Spacecraft Makes New Year's Day Flyby of Ultima Thule, the Farthest Rendezvous Ever
Space.com - January 1, 2019
Nasa's New Horizons: 'Snowman' shape of distant Ultima Thule revealed BBC - January 2, 2019
As the world celebrated the start of 2019, scientists with NASA's New Horizons spacecraft partied with them. But the bigger celebration came just over 30 minutes later, when New Horizons made history with the flyby of Ultima Thule, a mysterious object 4.1 billion miles (6.6 billion kilometers) from Earth in the Kuiper Belt, home to frozen relics left over from the birth of the solar system. It's the farthest flyby of an object in our solar system; and the second rendezvous for New Horizons, which visited Pluto in July 2015.