Astronomers have voted to strip Pluto of its status as a planet.
About 2,500 scientists meeting in Prague have adopted historic new guidelines that see the small, distant world demoted to a secondary category.

The researchers said Pluto failed to dominate its orbit around the Sun in the same way as the other planets. Full story here...

Pluto vote 'hijacked' in revolt

A fierce backlash has begun against the decision by astronomers to strip Pluto of its status as a planet.
On Thursday, experts approved a definition of a planet that demoted Pluto to a lesser category of object.

But the lead scientist on Nasa's robotic mission to Pluto has lambasted the ruling, calling it "embarrassing".

And the chair of the committee set up to oversee agreement on a definition implied that the vote had effectively been "hijacked". Full story...