Spacecraft begins 2019 with flyby on solar system’s edge
LAUREL, MD. — NASA’s New Horizons spacecraft pulled off the most distant exploration of another world Tuesday, skimming past a tiny, icy object 4 billion miles from Earth that looks to be shaped like a bowling pin.
Flight controllers in Maryland declared success 10 hours after the high-risk, middle-ofthe-night encounter at the mysterious body known as Ultima Thule on the frozen fringes of our solar system, an astounding 1 billion miles (1.6 billion kilometers) beyond Pluto.
“I don’t know about all of you, but I’m really liking this 2019 thing so far,” lead scientist Alan Stern of Southwest Research Institute said to applause. “I’m here to tell you that last night, overnight, the United States spacecraft New Horizons conducted the farthest exploration in the history of humankind, and did so spectacularly.”
The close approach came a half-hour into the new year, and 3 ½ years after New Horizons’ unprecedented swing past Pluto.
For Ultima Thule — which wasn’t even known when New Horizons departed Earth in 2006 — the endeavor was more difficult. The spacecraft zoomed within 2,200 miles (3,500 kilometers) of it, more than three times closer than the Pluto flyby.
Operating on autopilot, New Horizons was out of radio contact with controllers at Johns Hopkins University’s Applied Physics Laboratory from late Monday afternoon until late Tuesday morning. Scientists wanted the spacecraft staring down Ultima Thule and collecting data, not turning toward Earth to phone home.