Latest International Astronomical Union Stories
Astronomers around the world are taking part in a marathon in celebration of the 400th anniversary of Galileoâ€™s first use of a telescope in 1609.
To mark UNESCO's International Year of Astronomy (IYA2009), six leading astronomers from the UK, the US, Europe and Asia write in March's Physics World about the biggest challenges and opportunities facing international astronomers over the next couple of decades.
Astronomers from around the world have gathered in Paris for the start of the International Year of Astronomy 2009 (IYA2009), the largest network ever for sharing the wonders of the Universe with the public.
The International Astronomical Union (IAU) recently approved a proposal from the MESSENGER Science Team to name 15 craters on Mercury.
According to the International Astronomical Union, a dwarf planet beyond Neptune has been given the name Makemake, and has been designated the third plutoid in the solar system.
Updated 6:35 p.m.
The International Astronomical Union has decided on the term plutoid as a name for dwarf planets like Pluto at a meeting of its Executive Committee in Oslo.
The International Astronomical Union (IAU) has approved new names for features on Mercury and agreed on a new theme for fossae on the planet. These newly christened features were discovered from images taken by the MESSENGER spacecraft during its first flyby of Mercury in January.
By Andy Sullivan WASHINGTON (Reuters) - Hundreds of U.S. scientists have challenged a recent decision by an international astronomy group to strip Pluto of its planetary status with a petition rejecting its definition of what constitutes a planet.
If you woke up Thursday morning and sensed something was different about the world around you, you're absolutely right. Pluto is no longer a planet.
- An imitative word; an onomatopoetic word.