Photos: Delta 4-Heavy launch gallery

A speedy space probe barreled past Pluto for a one-shot flyby Tuesday, becoming the first spacecraft to ever visit the frozen, reddish world at the solar system’s distant frontier.

Now more than two years outbound from its historic encounter with Pluto, NASA’s New Horizons spacecraft is on target for a fleeting flyby less than 2,200 miles from 2014 MU69, an icy, city-sized world set to become the most distant object ever visited, just after midnight Jan. 1, 2019, on the U.S. East Coast. Scientists now say the probe may be able to pursue another destination some time in the 2020s.

The last bits of data collected during NASA’s New Horizons spacecraft’s speedy flyby of Pluto last year are back on Earth, scientists said Thursday, marking the official end of the probe’s prime mission.