International Astronomical Union

Organization

International organization responsible for astronomical nomenclature and the official definition of 'planet'

4 stories

Astronomers Detect Possible Atmosphere Around Small Icy World Beyond Pluto

NASA Administrator Reignites Debate Over Whether Pluto Should Be Reclassified as a Planet

Atlas V Rocket Launches Record-Breaking Payload of 29 Amazon Internet Satellites

Scientists Warn SpaceX's Orbital Data Center Plans Would Devastate Astronomy