Pluto reaches opposition and is ready for those who want to chase it down. Use the biggest scope you've got, or take aim with ...

Pluto was once known as the ninth planet but was reclassified after scientists set clear criteria for planets. The key factor was Pluto’s inability to clear its orbital path, leading to its current ...

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

A newly discovered dwarf planet called 'Ammonite' (2023 KQ14) has been spotted in the outer solar system, and it could be ...