The newly discovered world — a "sednoid" — challenges what planetary scientists thought they knew about the edge of the solar ...

A rare celestial object beyond Neptune, 2020 VN40, moves in sync with Neptune, offering new insights into the outer solar system and fueling the search for Planet Nin ...

Japan's Subaru Telescope in Hawaii detected a faint, icy body. Now named 2023 KQ14, or Ammonite, it lies well beyond Pluto.

An icy object in perfect sync with Neptune reveals new details about planetary migration and unseen bodies far beyond the Kuiper Belt.

Pluto reaches opposition and the Moon waxes to First Quarter as shooting stars streak through the sky this week.

Every once in a while, space gives us something totally unexpected. Well this time, the solar system is surprising us with a ...

SCOTS may be able to catch a glimpse of Pluto this week as it reaches peak brightness. The dwarf planet is set to be at its ...

Early observations of the planets revealed worlds far different from Earth, demonstrating that the universe was far more ...

Fifty films will compete for the Heart of Sarajevo awards at the 31st Sarajevo Film Festival, and one film will be shown out ...

The celestial body's unusual orbit “implies that something extraordinary occurred" in the early days of the solar system—and ...

Astronomers have discovered "Ammonite," a mysterious object on the solar system’s edge whose unusual orbit challenges current ...

NASA's New Horizons spacecraft made history by flying past Pluto, sending back groundbreaking data that would change our ...