What people thought about Pluto's demotion
26 January 2009
Read some of the letters complaining about the decision to strip Pluto of its planetary status
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Premium
Found 677 results for dwarf planet
Review: The Pluto Files by Neil deGrasse Tyson
21 January 2009
A highly entertaining history of Pluto with an emphasis on its place in culture, especially in the US, where it has been called a "true-blue American planet"
Smallest known exoplanet may actually be Earth-mass
19 January 2009
A tiny planet found last year might be even smaller than first thought – weighing just 1.4 times as much as Earth
2008: The year in astronomy
1 January 2009
Astronomers observed the most powerful explosion ever recorded, detected what may be dark matter and found hints of a fractal universe
2008: The year in the solar system
31 December 2008
Astronomers glimpsed unseen swathes of Mercury, found a space rock heading for Earth and landed a probe squarely on a patch of Martian ice
Burrowing black holes devoured first stars from within
17 December 2008
The digested end-product of this cosmic feast could be the ancestors of the supermassive black holes that sit at the centre of galaxies like the Milky Way
News review 2008: The best and worst of the year
17 December 2008
Our favourite stories of the year, and yours. Plus the silliest blunders
Milky Way's dimmest bulbs found
10 December 2008
An object that astronomers thought was a single brown dwarf is probably two dim ones instead – such faint objects may be quite common
Why the universe may be teeming with aliens
19 November 2008
Hunting for a planet that can support life? There's more to it than looking for Earth's distant twin, says David Shiga
Remains of devoured planet discovered
19 November 2008
The dusty remains of a distant planet show what happens to a gas giant if it survives a red giant explosion
