NASA’s New Horizons spacecraft has been speeding through space since early 2006 and it’s about to make what might be its most interesting flyby to date. After speeding past Jupiter and Pluto in the 12 years since its launch, the probe is about to have a very close encounter with a mysterious object in the outer Solar System called Ultima Thule. As luck would have it, it’s going to meet its target on New Year’s Day, and it’s a pretty big deal for NASA.

As we approach the probe’s arrival at Ultima Thule, NASA is announcing its schedule of events related to the probe’s flyby. The big show will begin on the afternoon of Monday, December 31st, and it’ll kick off three days of news and briefings that will give us our best look yet at an extremely distant Solar System object.