Video: New Horizons animation

Queen guitarist and contributing New Horizons scientist Brian May wrote a song celebrating the spacecraft’s New Year’s flyby with Ultima Thule, a supposed block of ice and rock in the Kuiper Belt beyond the orbit of Pluto.

The final days before NASA’s New Horizons probe barrels in on its next destination on Jan. 1, 2019, should prove eventful, with scientists trying to sort out whether a distant mini-world detected by the Hubble Space Telescope more than three years ago may actually be a swarm of icy objects.

NASA’s New Horizons spacecraft made a historic New Year’s encounter with an object nicknamed Ultima Thule in the Kuiper Belt a billion miles beyond Pluto. The NASA space probe passed Ultima Thule at a distance of around 2,200 miles (3,500 kilometers) at 12:33 a.m. EST (0533 GMT) on Jan. 1, making it the most distant planetary body ever explored up close.