In 2006, Pluto was famously demoted from a planet to a dwarf planet. It remains the most famous dwarf planet today, but there are others in our solar system, including potentially hundreds that ...

The reclassification of Pluto as a dwarf planet continues to stir up a hornet's nest of controversy and debate, as Space.com meets one astronomer who believes the decision to have been a mistake.

Add Yahoo as a preferred source to see more of our stories on Google. Beyond the familiar planets lies a fascinating frontier filled with icy worlds, mysterious orbits, and cosmic curiosities. These ...

The finding comes from a fresh analysis of old data from NASA's Dawn spacecraft, which finished its mission in 2018. 'Oumuamua, the first known visitor from interstellar space, was likely a ...