Over the past decade, researchers have been puzzling through Pluto’s mysteries. Meanwhile, the New Horizons probe heads for interstellar space.

The New Horizons probe, after flying by Pluto, went to the edges of the Solar System (over 3.7 billion miles or 6 billion km from Earth) to provide images of a small snowman-shaped asteroid (Arrokoth) ...

New Horizons just completed its first successful stellar navigation test in deep space, a groundbreaking moment for ...