Astronomers have discovered a massive new solar system body located beyond the orbit of Pluto. The weird elongated orbit of the object suggests that if "Planet Nine" exists, it is much further from ...

The US Space Force's secret-but-not-really-secret spaceplane will carry out a novel maneuver called aerobraking to change its orbit. Instead of using thrusters, the robotic spacecraft will dip into ...

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar System. Named 2023 KQ14, this rare “sednoid” follows an unusual orbit that ...