Broken dwarf planet may have scarred the moon
3 June 2009
The shattered remnants of a dwarf planet may have bombarded the inner planets in the early solar system, suggests a new analysis of craters on the moon
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Found 275 results for dwarf planet
Life-friendly worlds may snap, crackle and pop
18 March 2009
Alien worlds that are hospitable to life could reveal themselves by radio signals crackling from their magnetic fields
Kepler telescope launches to hunt for alien Earths
4 February 2009
The space telescope should be able to see Earth-size planets in the 'habitable zone' of their stars for the first time
Where do comets come from?
28 January 2009
These cosmic apparitions have had humans pondering their nature for millennia, yet theories of where comets originate still don't stand up
Review: The Hunt for Planet X by Govert Schilling
28 January 2009
A wonderfully entertaining book which conveys the raw excitement of the hunt for new planets
How will the solar system end?
28 January 2009
In the final part of our Unknown Solar System special, we discover that the solar system has been relatively peaceful since the ructions that created the planets in the first 100 million years – but this calm can't last
Is there a Planet X?
28 January 2009
Lurking in the solar system's dark recesses, rumour has it, is an unsighted world – Planet X, a frozen body perhaps as large as Mars, or even Earth
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"
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
